Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects

Geography

Sources of information

In Class 11 Geography, this topic introduces how scientists investigate the Earth’s interior, which cannot be observed directly. Students distinguish direct evidence from mines, deep drilling and volcanic materials, and indirect evidence from seismic waves, meteorites, gravity, magnetic fields, and variations in temperature and pressure. The topic explains how these sources help infer the Earth’s internal structure and composition within the chapter Interior of the Earth.

Expert · Level 3 · 25 questions

Practice questions

01If limited drilling data and deep seismic clues give different conclusions what is the correct scientific interpretation?

0 reads0 helpful★ – (0)

Answer and explanation

02In which situation should increase in P wave velocity and arrival of S wave be read together?

0 reads0 helpful★ – (0)

Answer and explanation

03Why is it not proper to prove liquid state of outer core only from magnetic field?

0 reads0 helpful★ – (0)

Answer and explanation

04If gravity anomaly indicates high density but rock sample is light what conclusion is better?

0 reads0 helpful★ – (0)

Answer and explanation

05Which conclusion is strengthened by studying seismic shadow zone and P wave refraction together?

0 reads0 helpful★ – (0)

Answer and explanation

06Why can meteorite and mine rock not be considered the same type of evidence?

0 reads0 helpful★ – (0)

Answer and explanation

07What is the similarity in identifying Moho boundary and Gutenberg boundary?

0 reads0 helpful★ – (0)

Answer and explanation

08If S waves do not reach a deep region but P wave path bends what is indicated?

0 reads0 helpful★ – (0)

Answer and explanation

09Why should geothermal gradient be understood in a different category from radioactive decay?

0 reads0 helpful★ – (0)

Answer and explanation

10Which option correctly shows limitation of direct source and usefulness of seismic source?

0 reads0 helpful★ – (0)

Answer and explanation

11If rock sample is from crust and magnetic clue is related to core how should conclusion be formed?

0 reads0 helpful★ – (0)

Answer and explanation

12Why is behavior of S and P waves important in discussion of Lehmann boundary?

0 reads0 helpful★ – (0)

Answer and explanation

13In which situation is laboratory rock analysis more suitable than seismic analysis?

0 reads0 helpful★ – (0)

Answer and explanation

14If seismic velocity changes sharply but no direct sample exists what is the nature of evidence?

0 reads0 helpful★ – (0)

Answer and explanation

15In which situation will lava be considered useful but insufficient evidence?

0 reads0 helpful★ – (0)

Answer and explanation

16If gravity clue and magnetic clue are found in the same area which question is most useful?

0 reads0 helpful★ – (0)

Answer and explanation

17What is the main difference between seismic reflection and refraction?

0 reads0 helpful★ – (0)

Answer and explanation

18If S waves arrive but P wave velocity decreases greatly what conclusion should be written cautiously?

0 reads0 helpful★ – (0)

Answer and explanation

19Why are seismic waves considered indirect but main source?

0 reads0 helpful★ – (0)

Answer and explanation

20Before applying conclusion from which source to whole Earth's interior must its scope be checked?

0 reads0 helpful★ – (0)

Answer and explanation

21Comparison of Earth's mean density and surface rock density works like which source category?

0 reads0 helpful★ – (0)

Answer and explanation

22Which option has the most correct match of source and limitation?

0 reads0 helpful★ – (0)

Answer and explanation

23If magnetic clue shows metallic nature but gravity is low for a deep region what should be done?

0 reads0 helpful★ – (0)

Answer and explanation

24Ocean floor rocks are more suitable for which conclusion?

0 reads0 helpful★ – (0)

Answer and explanation

25If both P and S waves change behavior at a boundary what analysis becomes stronger?

0 reads0 helpful★ – (0)

Answer and explanation

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.