Class 11 Geography - Distribution of Oceans and Continents - Continental Drift Theory and its evidence Easy Quiz

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भूकंप किसे कहते हैं?

What is an earthquake?

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Correct Answer

B. पृथ्वी की सतह का अचानक कंपनSudden shaking of the earth surface

Step 1

Concept

An earthquake is sudden shaking of the earth surface. For exams remember it as sudden release of energy.

Step 2

Why this answer is correct

The correct answer is B. पृथ्वी की सतह का अचानक कंपन / Sudden shaking of the earth surface. An earthquake is sudden shaking of the earth surface. For exams remember it as sudden release of energy.

Step 3

Exam Tip

भूकंप पृथ्वी की सतह का अचानक कंपन है। परीक्षा में इसे ऊर्जा के अचानक मुक्त होने से जोड़कर याद रखें।

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भूकंप की उत्पत्ति का पृथ्वी के अंदर स्थित बिंदु क्या कहलाता है?

What is the point inside the earth where an earthquake originates called?

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Correct Answer

B. उद्गम केंद्रFocus

Step 1

Concept

The focus is the point inside the earth from where seismic energy is released. It is also called hypocentre.

Step 2

Why this answer is correct

The correct answer is B. उद्गम केंद्र / Focus. The focus is the point inside the earth from where seismic energy is released. It is also called hypocentre.

Step 3

Exam Tip

उद्गम केंद्र पृथ्वी के अंदर वह बिंदु है जहाँ से भूकंपीय ऊर्जा निकलती है। इसे हाइपोसेंटर भी कहते हैं।

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भूकंप के उद्गम केंद्र के ठीक ऊपर पृथ्वी की सतह पर स्थित बिंदु क्या कहलाता है?

What is the point on the earth surface directly above the earthquake focus called?

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Correct Answer

A. अधिकेंद्रEpicentre

Step 1

Concept

The epicentre lies on the surface directly above the focus. In exams treat epicentre as the surface point.

Step 2

Why this answer is correct

The correct answer is A. अधिकेंद्र / Epicentre. The epicentre lies on the surface directly above the focus. In exams treat epicentre as the surface point.

Step 3

Exam Tip

अधिकेंद्र उद्गम केंद्र के ठीक ऊपर सतह पर स्थित होता है। परीक्षा में अधिकेंद्र को सतही बिंदु मानें।

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भूकंप से उत्पन्न तरंगों को क्या कहते हैं?

What are the waves generated by an earthquake called?

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Correct Answer

C. भूकंपीय तरंगेंSeismic waves

Step 1

Concept

Energy released during an earthquake travels as seismic waves. If the term seismic appears remember earthquake waves.

Step 2

Why this answer is correct

The correct answer is C. भूकंपीय तरंगें / Seismic waves. Energy released during an earthquake travels as seismic waves. If the term seismic appears remember earthquake waves.

Step 3

Exam Tip

भूकंप से निकली ऊर्जा भूकंपीय तरंगों के रूप में फैलती है। प्रश्न में seismic शब्द आए तो earthquake waves याद करें।

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एस तरंग को द्वितीयक तरंग क्यों कहा जाता है?

Why is an S wave called a secondary wave?

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Correct Answer

B. यह पी तरंग के बाद पहुँचती हैIt arrives after P wave

Step 1

Concept

S waves are recorded after P waves. Therefore they are called secondary waves.

Step 2

Why this answer is correct

The correct answer is B. यह पी तरंग के बाद पहुँचती है / It arrives after P wave. S waves are recorded after P waves. Therefore they are called secondary waves.

Step 3

Exam Tip

एस तरंग पी तरंग के बाद दर्ज होती है। इसलिए इसे secondary wave कहा जाता है।

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कौन सी भूकंपीय तरंग केवल ठोस माध्यम से गुजरती है?

Which seismic wave passes only through solid medium?

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Correct Answer

B. एस तरंगS wave

Step 1

Concept

S waves do not pass through liquids. This property gives evidence that the outer core is liquid.

Step 2

Why this answer is correct

The correct answer is B. एस तरंग / S wave. S waves do not pass through liquids. This property gives evidence that the outer core is liquid.

Step 3

Exam Tip

एस तरंग द्रव माध्यम से नहीं गुजरती। इसी गुण से बाह्य क्रोड के द्रव होने का प्रमाण मिलता है।

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पी तरंग किस प्रकार के माध्यमों से गुजर सकती है?

Through which media can P waves travel?

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Correct Answer

C. ठोस द्रव और गैसSolids liquids and gases

Step 1

Concept

P wave is a compressional wave and can travel through solids liquids and gases. For exams remember it as the most capable body wave.

Step 2

Why this answer is correct

The correct answer is C. ठोस द्रव और गैस / Solids liquids and gases. P wave is a compressional wave and can travel through solids liquids and gases. For exams remember it as the most capable body wave.

Step 3

Exam Tip

पी तरंग संपीडन तरंग है और ठोस द्रव तथा गैस में चल सकती है। परीक्षा में पी तरंग को सबसे अधिक सक्षम तरंग मानें।

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भूकंप में सबसे अधिक विनाश सामान्यतः कौन सी तरंगें करती हैं?

Which waves generally cause the most destruction during an earthquake?

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Correct Answer

C. सतही तरंगेंSurface waves

Step 1

Concept

Surface waves move along the earth surface and cause more damage. For damage based questions remember surface waves.

Step 2

Why this answer is correct

The correct answer is C. सतही तरंगें / Surface waves. Surface waves move along the earth surface and cause more damage. For damage based questions remember surface waves.

Step 3

Exam Tip

सतही तरंगें पृथ्वी की सतह के साथ चलती हैं और अधिक क्षति पहुँचाती हैं। परीक्षा में damage के लिए surface waves याद रखें।

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भूकंपीय तरंगों की दो मुख्य श्रेणियाँ कौन सी हैं?

What are the two main categories of seismic waves?

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Correct Answer

B. आंतरिक और सतही तरंगेंBody and surface waves

Step 1

Concept

Seismic waves are mainly divided into body waves and surface waves. P and S waves are body waves.

Step 2

Why this answer is correct

The correct answer is B. आंतरिक और सतही तरंगें / Body and surface waves. Seismic waves are mainly divided into body waves and surface waves. P and S waves are body waves.

Step 3

Exam Tip

भूकंपीय तरंगें मुख्य रूप से आंतरिक और सतही तरंगों में बाँटी जाती हैं। पी और एस आंतरिक तरंगें हैं।

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पी तरंगों की गति में कणों का कंपन किस दिशा में होता है?

In P waves particle vibration occurs in which direction?

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Correct Answer

A. तरंग की दिशा के समानांतरParallel to wave direction

Step 1

Concept

In P waves particles vibrate back and forth parallel to wave direction. Remember this from their compressional nature.

Step 2

Why this answer is correct

The correct answer is A. तरंग की दिशा के समानांतर / Parallel to wave direction. In P waves particles vibrate back and forth parallel to wave direction. Remember this from their compressional nature.

Step 3

Exam Tip

पी तरंगों में कण आगे पीछे उसी दिशा में कंपन करते हैं जिसमें तरंग चलती है। इसे संपीडन प्रकृति से याद रखें।

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भूकंप मापने के लिए किस यंत्र का उपयोग किया जाता है?

Which instrument is used to record earthquakes?

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Correct Answer

B. सीस्मोग्राफSeismograph

Step 1

Concept

A seismograph records seismic waves. In exams connect graph with recording.

Step 2

Why this answer is correct

The correct answer is B. सीस्मोग्राफ / Seismograph. A seismograph records seismic waves. In exams connect graph with recording.

Step 3

Exam Tip

सीस्मोग्राफ भूकंपीय तरंगों को रिकॉर्ड करता है। परीक्षा में graph शब्द से recording याद करें।

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भूकंप की तीव्रता से धरातल पर प्रभाव किस पैमाने से समझे जाते हैं?

The effects of an earthquake on the ground are described by which scale?

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Correct Answer

B. मर्काली पैमानाMercalli scale

Step 1

Concept

Mercalli scale describes effects and damage of an earthquake. Remember the difference between magnitude and intensity.

Step 2

Why this answer is correct

The correct answer is B. मर्काली पैमाना / Mercalli scale. Mercalli scale describes effects and damage of an earthquake. Remember the difference between magnitude and intensity.

Step 3

Exam Tip

मर्काली पैमाना भूकंप के प्रभाव और क्षति को बताता है। magnitude और intensity में अंतर जरूर याद रखें।

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भूकंप की परिमाण को सामान्यतः किस पैमाने से जोड़ा जाता है?

Earthquake magnitude is generally associated with which scale?

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Correct Answer

A. रिक्टर पैमानाRichter scale

Step 1

Concept

Richter scale is related to earthquake magnitude. For exams remember Richter for magnitude.

Step 2

Why this answer is correct

The correct answer is A. रिक्टर पैमाना / Richter scale. Richter scale is related to earthquake magnitude. For exams remember Richter for magnitude.

Step 3

Exam Tip

रिक्टर पैमाना भूकंप की परिमाण से संबंधित है। परीक्षा में magnitude के लिए Richter याद करें।

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टेक्टोनिक भूकंप किस कारण से आते हैं?

Tectonic earthquakes occur due to what cause?

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Correct Answer

A. प्लेटों की गति और भ्रंशPlate movement and faulting

Step 1

Concept

Tectonic earthquakes are caused by plate movement and faulting. They are the most common type of earthquakes.

Step 2

Why this answer is correct

The correct answer is A. प्लेटों की गति और भ्रंश / Plate movement and faulting. Tectonic earthquakes are caused by plate movement and faulting. They are the most common type of earthquakes.

Step 3

Exam Tip

टेक्टोनिक भूकंप प्लेटों की गति और भ्रंश से उत्पन्न होते हैं। ये सबसे सामान्य प्रकार के भूकंप हैं।

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ज्वालामुखीय भूकंप किससे संबंधित होते हैं?

Volcanic earthquakes are related to what?

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Correct Answer

B. ज्वालामुखी गतिविधि सेVolcanic activity

Step 1

Concept

Volcanic earthquakes are linked with magma and volcanic activity. Remember them with volcanic areas.

Step 2

Why this answer is correct

The correct answer is B. ज्वालामुखी गतिविधि से / Volcanic activity. Volcanic earthquakes are linked with magma and volcanic activity. Remember them with volcanic areas.

Step 3

Exam Tip

ज्वालामुखीय भूकंप मैग्मा और ज्वालामुखी गतिविधि से जुड़े होते हैं। इन्हें volcanic areas से जोड़कर याद रखें।

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किस प्रकार का भूकंप खदानों या भूमिगत गुफाओं के धँसने से हो सकता है?

Which type of earthquake can occur due to collapse of mines or underground caves?

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Correct Answer

C. धँसाव भूकंपCollapse earthquake

Step 1

Concept

Collapse earthquakes may occur when mines or caves collapse in a small area. Connect collapse with subsidence in exams.

Step 2

Why this answer is correct

The correct answer is C. धँसाव भूकंप / Collapse earthquake. Collapse earthquakes may occur when mines or caves collapse in a small area. Connect collapse with subsidence in exams.

Step 3

Exam Tip

धँसाव भूकंप छोटे क्षेत्र में खदान या गुफा धँसने से हो सकता है। परीक्षा में collapse शब्द को धँसाव से जोड़ें।

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बड़े बाँधों और जलाशयों से जुड़ा भूकंप किस नाम से जाना जाता है?

An earthquake linked with large dams and reservoirs is known as what?

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Correct Answer

A. जलाशय प्रेरित भूकंपReservoir induced earthquake

Step 1

Concept

Reservoir load and water seepage can change local stress. So it is called reservoir induced earthquake.

Step 2

Why this answer is correct

The correct answer is A. जलाशय प्रेरित भूकंप / Reservoir induced earthquake. Reservoir load and water seepage can change local stress. So it is called reservoir induced earthquake.

Step 3

Exam Tip

जलाशय का भार और जल का रिसाव स्थानीय तनाव बदल सकता है। इसलिए इसे reservoir induced earthquake कहते हैं।

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प्राकृतिक भूकंपों का सबसे सामान्य कारण क्या है?

What is the most common cause of natural earthquakes?

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Correct Answer

A. प्लेट विवर्तनिकीPlate tectonics

Step 1

Concept

Most natural earthquakes are linked with plate tectonics. In exams connect earthquake zones with plate boundaries.

Step 2

Why this answer is correct

The correct answer is A. प्लेट विवर्तनिकी / Plate tectonics. Most natural earthquakes are linked with plate tectonics. In exams connect earthquake zones with plate boundaries.

Step 3

Exam Tip

अधिकांश प्राकृतिक भूकंप प्लेट विवर्तनिकी से जुड़े होते हैं। परीक्षा में earthquake zones को plate boundaries से जोड़ें।

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भ्रंश क्या है?

What is a fault?

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Correct Answer

A. चट्टानों में दरार और विस्थापन का क्षेत्रZone of fracture and displacement in rocks

Step 1

Concept

A fault is linked with fracture and displacement in rocks. Faults are very important in tectonic earthquakes.

Step 2

Why this answer is correct

The correct answer is A. चट्टानों में दरार और विस्थापन का क्षेत्र / Zone of fracture and displacement in rocks. A fault is linked with fracture and displacement in rocks. Faults are very important in tectonic earthquakes.

Step 3

Exam Tip

भ्रंश चट्टानों में टूटन और विस्थापन से जुड़ा होता है। टेक्टोनिक भूकंपों में faults बहुत महत्वपूर्ण हैं।

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मुख्य भूकंप के बाद आने वाले छोटे झटके क्या कहलाते हैं?

What are smaller shocks after the main earthquake called?

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Correct Answer

B. अनुचालAftershocks

Step 1

Concept

Shocks that occur after the main shock are called aftershocks. In exams remember after means later.

Step 2

Why this answer is correct

The correct answer is B. अनुचाल / Aftershocks. Shocks that occur after the main shock are called aftershocks. In exams remember after means later.

Step 3

Exam Tip

मुख्य झटके के बाद आने वाले झटके aftershocks कहलाते हैं। परीक्षा में after का अर्थ बाद में याद रखें।

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मुख्य भूकंप से पहले कभी कभी आने वाले छोटे झटके क्या कहलाते हैं?

What are small shocks that sometimes occur before the main earthquake called?

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Correct Answer

B. पूर्वझटकेForeshocks

Step 1

Concept

Small shocks before the main shock are called foreshocks. Do not treat them as a certain basis of prediction.

Step 2

Why this answer is correct

The correct answer is B. पूर्वझटके / Foreshocks. Small shocks before the main shock are called foreshocks. Do not treat them as a certain basis of prediction.

Step 3

Exam Tip

मुख्य झटके से पहले आने वाले छोटे झटके foreshocks कहलाते हैं। इन्हें prediction का पक्का आधार न मानें।

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उथले उद्गम वाले भूकंप में उद्गम केंद्र की गहराई सामान्यतः कैसी होती है?

In a shallow focus earthquake the depth of focus is generally what?

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Correct Answer

A. कमLow

Step 1

Concept

Shallow earthquakes have their focus relatively near the surface. They can cause more surface damage.

Step 2

Why this answer is correct

The correct answer is A. कम / Low. Shallow earthquakes have their focus relatively near the surface. They can cause more surface damage.

Step 3

Exam Tip

उथले भूकंपों का उद्गम केंद्र सतह के अपेक्षाकृत पास होता है। ये सतह पर अधिक क्षति पहुँचा सकते हैं।

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गहरे उद्गम वाले भूकंप का उद्गम केंद्र कहाँ होता है?

Where is the focus of a deep focus earthquake located?

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Correct Answer

B. पृथ्वी के अधिक गहरे भाग मेंDeeper inside the earth

Step 1

Concept

Deep focus earthquakes originate at greater depth inside the earth. In exams deep focus can also be linked with subduction zones.

Step 2

Why this answer is correct

The correct answer is B. पृथ्वी के अधिक गहरे भाग में / Deeper inside the earth. Deep focus earthquakes originate at greater depth inside the earth. In exams deep focus can also be linked with subduction zones.

Step 3

Exam Tip

गहरे भूकंपों का उद्गम केंद्र पृथ्वी के भीतर अधिक गहराई पर होता है। परीक्षा में deep focus को subduction zones से भी जोड़ सकते हैं।

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भूकंप की तरंगों का अध्ययन पृथ्वी के आंतरिक भाग के बारे में क्या देता है?

What does the study of earthquake waves provide about the earth interior?

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Correct Answer

A. आंतरिक संरचना की जानकारीInformation about internal structure

Step 1

Concept

Seismic waves pass through the earth and indicate its internal structure. In exams treat waves as indirect evidence.

Step 2

Why this answer is correct

The correct answer is A. आंतरिक संरचना की जानकारी / Information about internal structure. Seismic waves pass through the earth and indicate its internal structure. In exams treat waves as indirect evidence.

Step 3

Exam Tip

भूकंपीय तरंगें पृथ्वी के अंदर से गुजरकर आंतरिक संरचना का संकेत देती हैं। परीक्षा में waves को indirect evidence मानें।

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भूकंपीय छाया क्षेत्र बनने का मुख्य कारण क्या है?

What is the main reason for formation of seismic shadow zones?

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Correct Answer

A. तरंगों का अपवर्तन और कुछ तरंगों का रुकनाRefraction of waves and blocking of some waves

Step 1

Concept

Shadow zones form due to bending of waves and because S waves cannot pass through liquid outer core. Remember it as evidence about the core.

Step 2

Why this answer is correct

The correct answer is A. तरंगों का अपवर्तन और कुछ तरंगों का रुकना / Refraction of waves and blocking of some waves. Shadow zones form due to bending of waves and because S waves cannot pass through liquid outer core. Remember it as evidence about the core.

Step 3

Exam Tip

छाया क्षेत्र तरंगों के मुड़ने और एस तरंगों के द्रव बाह्य क्रोड में न जाने से बनते हैं। इसे core evidence से जोड़कर याद रखें।

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एस तरंग छाया क्षेत्र पृथ्वी के किस गुण का प्रमाण देता है?

S wave shadow zone gives evidence of which property of the earth?

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Correct Answer

A. बाह्य क्रोड द्रव हैOuter core is liquid

Step 1

Concept

S waves cannot pass through the liquid outer core. Therefore S wave shadow zone is evidence that the outer core is liquid.

Step 2

Why this answer is correct

The correct answer is A. बाह्य क्रोड द्रव है / Outer core is liquid. S waves cannot pass through the liquid outer core. Therefore S wave shadow zone is evidence that the outer core is liquid.

Step 3

Exam Tip

एस तरंगें द्रव बाह्य क्रोड से नहीं गुजरतीं। इसलिए एस तरंग छाया क्षेत्र बाह्य क्रोड के द्रव होने का प्रमाण है।

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पी तरंग छाया क्षेत्र लगभग किन कोणों के बीच पाया जाता है?

P wave shadow zone is found approximately between which angular distances?

Explanation opens after your attempt
Correct Answer

C. 103 से 142 डिग्री103 to 142 degrees

Step 1

Concept

P wave shadow zone lies roughly between 103 and 142 degrees. It forms due to refraction at the core.

Step 2

Why this answer is correct

The correct answer is C. 103 से 142 डिग्री / 103 to 142 degrees. P wave shadow zone lies roughly between 103 and 142 degrees. It forms due to refraction at the core.

Step 3

Exam Tip

पी तरंगों का छाया क्षेत्र लगभग 103 से 142 डिग्री के बीच होता है। यह क्रोड पर अपवर्तन के कारण बनता है।

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एस तरंगें अधिकेंद्र से लगभग कितने डिग्री के बाद दर्ज नहीं होतीं?

S waves are not recorded beyond approximately how many degrees from the epicentre?

Explanation opens after your attempt
Correct Answer

C. 103 डिग्री103 degrees

Step 1

Concept

S waves are not found beyond about 103 degrees because they cannot pass through the liquid outer core. This fact is often asked.

Step 2

Why this answer is correct

The correct answer is C. 103 डिग्री / 103 degrees. S waves are not found beyond about 103 degrees because they cannot pass through the liquid outer core. This fact is often asked.

Step 3

Exam Tip

एस तरंगें लगभग 103 डिग्री के बाद नहीं मिलतीं क्योंकि वे द्रव बाह्य क्रोड से नहीं गुजरतीं। यह तथ्य बहुत पूछा जाता है।

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लव तरंग किस श्रेणी की भूकंपीय तरंग है?

Love wave belongs to which category of seismic waves?

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Correct Answer

B. सतही तरंगSurface wave

Step 1

Concept

Love wave is a surface wave. Surface waves are considered more destructive.

Step 2

Why this answer is correct

The correct answer is B. सतही तरंग / Surface wave. Love wave is a surface wave. Surface waves are considered more destructive.

Step 3

Exam Tip

लव तरंग सतही तरंग है। सतही तरंगें अधिक विनाशकारी मानी जाती हैं।

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रेले तरंग किस प्रकार की तरंग है?

Rayleigh wave is which type of wave?

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A. सतही भूकंपीय तरंगSurface seismic wave

Step 1

Concept

Rayleigh wave is a surface wave travelling near the earth surface. Identify it with rolling motion.

Step 2

Why this answer is correct

The correct answer is A. सतही भूकंपीय तरंग / Surface seismic wave. Rayleigh wave is a surface wave travelling near the earth surface. Identify it with rolling motion.

Step 3

Exam Tip

रेले तरंग पृथ्वी की सतह के पास चलने वाली सतही तरंग है। इसे rolling motion से पहचानें।

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आंतरिक तरंगें किन्हें कहा जाता है?

Which waves are called body waves?

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Correct Answer

A. पी और एस तरंगेंP and S waves

Step 1

Concept

P and S waves pass through the earth interior so they are called body waves. For exams remember body waves equal P plus S.

Step 2

Why this answer is correct

The correct answer is A. पी और एस तरंगें / P and S waves. P and S waves pass through the earth interior so they are called body waves. For exams remember body waves equal P plus S.

Step 3

Exam Tip

पी और एस तरंगें पृथ्वी के अंदर से गुजरती हैं इसलिए इन्हें आंतरिक तरंगें कहते हैं। परीक्षा में body waves बराबर P plus S याद रखें।

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भूकंप के समय भवनों को अधिक नुकसान किस कारण होता है?

During an earthquake buildings are damaged more due to what?

Explanation opens after your attempt
Correct Answer

A. भूमि के कंपन सेGround shaking

Step 1

Concept

Strong ground shaking damages buildings. Safe construction reduces earthquake risk.

Step 2

Why this answer is correct

The correct answer is A. भूमि के कंपन से / Ground shaking. Strong ground shaking damages buildings. Safe construction reduces earthquake risk.

Step 3

Exam Tip

भूमि का तेज कंपन इमारतों को नुकसान पहुँचाता है। सुरक्षित निर्माण भूकंप जोखिम को कम करता है।

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भूकंप का केंद्र अधिक गहरा होने पर सतह पर प्रभाव सामान्यतः कैसा होता है?

If an earthquake focus is deeper the surface effect is generally what?

Explanation opens after your attempt
Correct Answer

B. ऊर्जा अधिक दूरी में फैल सकती हैEnergy may spread over longer distance

Step 1

Concept

Energy from deeper earthquakes can be recorded over longer distances but local surface damage may often be lower. Read depth and effect together in questions.

Step 2

Why this answer is correct

The correct answer is B. ऊर्जा अधिक दूरी में फैल सकती है / Energy may spread over longer distance. Energy from deeper earthquakes can be recorded over longer distances but local surface damage may often be lower. Read depth and effect together in questions.

Step 3

Exam Tip

गहरे भूकंपों की ऊर्जा लंबी दूरी तक दर्ज हो सकती है लेकिन स्थानीय सतही क्षति अक्सर कम हो सकती है। प्रश्न में depth और effect को साथ पढ़ें।

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महासागर तल के नीचे आए शक्तिशाली भूकंप से कौन सी आपदा उत्पन्न हो सकती है?

A powerful earthquake below the ocean floor can generate which hazard?

Explanation opens after your attempt
Correct Answer

B. सुनामीTsunami

Step 1

Concept

A large undersea earthquake can suddenly disturb the water column and produce a tsunami. In exams connect submarine earthquake with tsunami.

Step 2

Why this answer is correct

The correct answer is B. सुनामी / Tsunami. A large undersea earthquake can suddenly disturb the water column and produce a tsunami. In exams connect submarine earthquake with tsunami.

Step 3

Exam Tip

समुद्र तल के नीचे बड़े भूकंप से जल स्तंभ अचानक हिल सकता है और सुनामी बन सकती है। परीक्षा में submarine earthquake से tsunami याद करें।

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भूकंप के अधिकेंद्र के पास झटके सामान्यतः कैसे महसूस होते हैं?

Near the epicentre earthquake shocks are generally felt how?

Explanation opens after your attempt
Correct Answer

A. अधिक तीव्रMore intense

Step 1

Concept

The effect of energy may be felt more near the epicentre. Shaking generally decreases with distance.

Step 2

Why this answer is correct

The correct answer is A. अधिक तीव्र / More intense. The effect of energy may be felt more near the epicentre. Shaking generally decreases with distance.

Step 3

Exam Tip

अधिकेंद्र के पास ऊर्जा का प्रभाव अधिक महसूस हो सकता है। दूरी बढ़ने पर कंपन सामान्यतः घटता है।

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भूकंपीय तरंगें सीधी रेखा में हमेशा क्यों नहीं चलतीं?

Why do seismic waves not always travel in a straight line?

Explanation opens after your attempt
Correct Answer

A. पृथ्वी के अंदर घनत्व और संरचना बदलती हैDensity and structure change inside the earth

Step 1

Concept

Changes in density and material inside the earth change wave speed and direction. Remember this with refraction.

Step 2

Why this answer is correct

The correct answer is A. पृथ्वी के अंदर घनत्व और संरचना बदलती है / Density and structure change inside the earth. Changes in density and material inside the earth change wave speed and direction. Remember this with refraction.

Step 3

Exam Tip

पृथ्वी के अंदर घनत्व और पदार्थ बदलने से तरंगों की गति और दिशा बदलती है। इसे refraction से जोड़कर याद रखें।

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भूकंप क्षेत्र अधिकतर कहाँ पाए जाते हैं?

Earthquake zones are mostly found where?

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Correct Answer

A. प्लेट सीमाओं के पासNear plate boundaries

Step 1

Concept

Earthquakes are common near plate boundaries due to stress and movement. On world maps connect earthquake belts with plate margins.

Step 2

Why this answer is correct

The correct answer is A. प्लेट सीमाओं के पास / Near plate boundaries. Earthquakes are common near plate boundaries due to stress and movement. On world maps connect earthquake belts with plate margins.

Step 3

Exam Tip

प्लेट सीमाओं पर तनाव और गति के कारण भूकंप अधिक होते हैं। विश्व मानचित्र में earthquake belts को plate margins से जोड़ें।

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भूकंप की गहराई जानने में कौन सा बिंदु महत्वपूर्ण है?

Which point is important for knowing earthquake depth?

Explanation opens after your attempt
Correct Answer

A. उद्गम केंद्रFocus

Step 1

Concept

Earthquake depth is related to the distance of the focus from the surface. Remember the difference between focus and epicentre.

Step 2

Why this answer is correct

The correct answer is A. उद्गम केंद्र / Focus. Earthquake depth is related to the distance of the focus from the surface. Remember the difference between focus and epicentre.

Step 3

Exam Tip

भूकंप की गहराई उद्गम केंद्र की सतह से दूरी से जुड़ी होती है। focus और epicentre का अंतर याद रखें।

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पी तरंग को प्राथमिक तरंग क्यों कहा जाता है?

Why is the P wave called primary wave?

Explanation opens after your attempt
Correct Answer

B. क्योंकि यह सबसे पहले दर्ज होती हैBecause it is recorded first

Step 1

Concept

P wave is the fastest and is recorded first. Understand primary as the first arriving wave.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि यह सबसे पहले दर्ज होती है / Because it is recorded first. P wave is the fastest and is recorded first. Understand primary as the first arriving wave.

Step 3

Exam Tip

पी तरंग सबसे तेज होती है और पहले दर्ज होती है। primary का अर्थ पहले आने वाली समझें।

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एस तरंगों के न पहुँचने वाले क्षेत्र को क्या कहा जाता है?

What is the area where S waves do not reach called?

Explanation opens after your attempt
Correct Answer

A. एस तरंग छाया क्षेत्रS wave shadow zone

Step 1

Concept

The area where S waves are not recorded is called the S wave shadow zone. Its cause is the liquid outer core.

Step 2

Why this answer is correct

The correct answer is A. एस तरंग छाया क्षेत्र / S wave shadow zone. The area where S waves are not recorded is called the S wave shadow zone. Its cause is the liquid outer core.

Step 3

Exam Tip

जहाँ एस तरंगें दर्ज नहीं होतीं उसे एस तरंग छाया क्षेत्र कहते हैं। इसका कारण द्रव बाह्य क्रोड है।

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भूकंपीय तरंगों की गति सबसे अधिक किस बात से प्रभावित होती है?

Seismic wave speed is most affected by what?

Explanation opens after your attempt
Correct Answer

A. माध्यम के गुणों सेProperties of the medium

Step 1

Concept

Density and elasticity of the medium affect wave speed. In exams remember medium change means speed change.

Step 2

Why this answer is correct

The correct answer is A. माध्यम के गुणों से / Properties of the medium. Density and elasticity of the medium affect wave speed. In exams remember medium change means speed change.

Step 3

Exam Tip

माध्यम की घनता और प्रत्यास्थता तरंगों की गति को प्रभावित करती है। परीक्षा में medium change से speed change याद रखें।

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भूकंप पूर्वानुमान कठिन क्यों माना जाता है?

Why is earthquake prediction considered difficult?

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A. क्योंकि सटीक समय स्थान और परिमाण बताना कठिन हैBecause exact time place and magnitude are difficult to tell

Step 1

Concept

It is difficult to predict exact time place and magnitude of an earthquake. Remember the difference between prediction and preparedness.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि सटीक समय स्थान और परिमाण बताना कठिन है / Because exact time place and magnitude are difficult to tell. It is difficult to predict exact time place and magnitude of an earthquake. Remember the difference between prediction and preparedness.

Step 3

Exam Tip

भूकंप का सटीक समय स्थान और परिमाण पहले से बताना कठिन है। परीक्षा में prediction और preparedness का अंतर याद रखें।

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भूकंप जोखिम कम करने का सबसे अच्छा उपाय कौन सा है?

Which is the best way to reduce earthquake risk?

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A. भूकंपरोधी निर्माण और तैयारीEarthquake resistant construction and preparedness

Step 1

Concept

Earthquakes cannot be stopped but safe construction and preparedness can reduce damage. In exams understand mitigation as damage reduction.

Step 2

Why this answer is correct

The correct answer is A. भूकंपरोधी निर्माण और तैयारी / Earthquake resistant construction and preparedness. Earthquakes cannot be stopped but safe construction and preparedness can reduce damage. In exams understand mitigation as damage reduction.

Step 3

Exam Tip

भूकंप को रोका नहीं जा सकता लेकिन सुरक्षित निर्माण और तैयारी से नुकसान घटाया जा सकता है। परीक्षा में mitigation को damage reduction समझें।

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भूकंप के समय सतह पर दरारें और भूमि खिसकना किससे जुड़ा हो सकता है?

Surface cracks and ground displacement during an earthquake may be related to what?

Explanation opens after your attempt
Correct Answer

A. भ्रंश गतिFault movement

Step 1

Concept

Fault movement can produce surface cracks and displacement. Connect fault line with earthquake damage.

Step 2

Why this answer is correct

The correct answer is A. भ्रंश गति / Fault movement. Fault movement can produce surface cracks and displacement. Connect fault line with earthquake damage.

Step 3

Exam Tip

भ्रंश गति से सतह पर दरारें और विस्थापन दिख सकते हैं। fault line को earthquake damage से जोड़ें।

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मृदा द्रवीकरण किस स्थिति से जुड़ा है?

Soil liquefaction is related to which condition?

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Correct Answer

A. जलसंतृप्त ढीली मिट्टी का कंपन से द्रव जैसा व्यवहारWater saturated loose soil behaving like liquid during shaking

Step 1

Concept

Water saturated loose soil can lose strength during an earthquake. This is called liquefaction.

Step 2

Why this answer is correct

The correct answer is A. जलसंतृप्त ढीली मिट्टी का कंपन से द्रव जैसा व्यवहार / Water saturated loose soil behaving like liquid during shaking. Water saturated loose soil can lose strength during an earthquake. This is called liquefaction.

Step 3

Exam Tip

जलसंतृप्त ढीली मिट्टी भूकंप में अपनी मजबूती खो सकती है। इसे liquefaction कहा जाता है।

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भूकंप के अध्ययन को क्या कहा जाता है?

What is the study of earthquakes called?

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Correct Answer

A. सीस्मोलॉजीSeismology

Step 1

Concept

The study of earthquakes and seismic waves is called seismology. In exams connect seismo with earthquake.

Step 2

Why this answer is correct

The correct answer is A. सीस्मोलॉजी / Seismology. The study of earthquakes and seismic waves is called seismology. In exams connect seismo with earthquake.

Step 3

Exam Tip

भूकंप और भूकंपीय तरंगों का अध्ययन सीस्मोलॉजी कहलाता है। परीक्षा में seismo शब्द को earthquake से जोड़ें।

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भूकंप की ऊर्जा पृथ्वी के अंदर से बाहर किस रूप में फैलती है?

In what form does earthquake energy spread from inside the earth?

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Correct Answer

A. भूकंपीय तरंगों के रूप मेंAs seismic waves

Step 1

Concept

Earthquake energy spreads in all directions as seismic waves. In exams connect energy propagation with seismic waves.

Step 2

Why this answer is correct

The correct answer is A. भूकंपीय तरंगों के रूप में / As seismic waves. Earthquake energy spreads in all directions as seismic waves. In exams connect energy propagation with seismic waves.

Step 3

Exam Tip

भूकंप की ऊर्जा भूकंपीय तरंगों के रूप में चारों ओर फैलती है। परीक्षा में ऊर्जा के प्रसार को seismic waves से जोड़ें।

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भूकंपीय तरंगों के मार्ग में मोड़ आने को क्या कहा जाता है?

What is the bending of seismic wave path called?

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Correct Answer

A. अपवर्तनRefraction

Step 1

Concept

Seismic waves can bend when they enter a different medium. This helps explain shadow zones.

Step 2

Why this answer is correct

The correct answer is A. अपवर्तन / Refraction. Seismic waves can bend when they enter a different medium. This helps explain shadow zones.

Step 3

Exam Tip

भूकंपीय तरंगें अलग माध्यम में जाने पर मुड़ सकती हैं। यह छाया क्षेत्रों को समझने में मदद करता है।

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कौन सी तरंगें पृथ्वी की सतह पर यात्रा करती हैं और अधिक समय तक कंपन करा सकती हैं?

Which waves travel on the earth surface and may cause longer shaking?

Explanation opens after your attempt
Correct Answer

A. सतही तरंगेंSurface waves

Step 1

Concept

Surface waves travel along the earth surface and may cause longer shaking. In exams connect surface waves with damage.

Step 2

Why this answer is correct

The correct answer is A. सतही तरंगें / Surface waves. Surface waves travel along the earth surface and may cause longer shaking. In exams connect surface waves with damage.

Step 3

Exam Tip

सतही तरंगें पृथ्वी की सतह पर चलती हैं और कई बार अधिक देर तक कंपन कराती हैं। परीक्षा में surface waves को damage से जोड़ें।

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भूकंप के अधिकेंद्र से दूरी बढ़ने पर झटकों की तीव्रता सामान्यतः कैसी होती है?

As distance from the epicentre increases what generally happens to earthquake shaking intensity?

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Correct Answer

A. घटती हैIt decreases

Step 1

Concept

Shaking intensity generally decreases with distance from the epicentre. In exams remember the inverse relation between distance and intensity.

Step 2

Why this answer is correct

The correct answer is A. घटती है / It decreases. Shaking intensity generally decreases with distance from the epicentre. In exams remember the inverse relation between distance and intensity.

Step 3

Exam Tip

अधिकेंद्र से दूर जाने पर कंपन की तीव्रता सामान्यतः कम होती जाती है। परीक्षा में distance और intensity का उल्टा संबंध याद रखें।

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FAQs

Class 11 Geography Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 50 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 40 seconds per question for Easy difficulty and shows the total remaining time on the page.

Can I open each question separately?

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