Endogenic and exogenic forces

Correct answer: A. Their source lies in internal stresses of the earth

Earthquakes result from sudden release of stress stored inside the earth. In exams identify the source of energy first.

Correct answer: B. Atmospheric system driven by gravity and solar energy

Exogenic processes are driven by weather systems from solar energy and by gravity. In exams link external energy with the sun and gravity.

Correct answer: B. Earthquake and volcanism

Earthquake and volcanism both arise from energy within the earth. In exams forces originating inside the earth are endogenic.

Correct answer: C. Weathering and erosion

Weathering and erosion occur on the earth surface through external agents. In exams breaking and removal of surface material are exogenic processes.

Correct answer: C. Because slope and gravitational instability are high

Endogenic uplift creates steep slopes and exogenic gravity makes them unstable. In exams landslide is a gravitational exogenic process.

Correct answer: C. Both are linked with stress generated inside the earth

Both folding and faulting deform rocks due to internal stresses. In exams connect structural landforms with endogenic processes.

Correct answer: A. They erode high areas and deposit in low areas

Exogenic forces remove material from higher places and deposit it in lower places. In exams this can be called a tendency toward leveling.

Correct answer: C. They can cause both constructive and sudden changes

Endogenic forces may cause slow changes like mountain building and sudden ones like earthquakes. In exams note that their rate can vary.

Correct answer: B. Steep area with heavy rainfall and weak rocks

Steep slope heavy rainfall and weak rocks increase erosion and landslides. In exams consider climate rock type and slope as controls of exogenic rate.

Correct answer: A. Endogenic volcanic process

Magma comes from inside the earth so volcanic landforms are endogenic. In exams focus on the depth of origin.

Correct answer: B. Mountains form by endogenic uplift and are modified by exogenic erosion over time

Mountain building and its degradation together produce real landforms. In exams distinguish formation from modification.

Correct answer: A. Because they operate through surface atmospheric climatic and gravitational factors

Exogenic processes directly act on rock soil and water at the surface. In exams link surface factors with external forces.

Correct answer: C. Relief will decrease by exogenic erosion

When uplift stops external erosion lowers height and slope. In exams think how landform tendency changes when energy balance changes.

Correct answer: B. Internal heat and gravitational readjustment

Endogenic forces are linked with internal heat and structural readjustment of the earth. In exams internal energy is the key clue.

Correct answer: A. A river cutting a deep valley in a young mountain

The mountain may be endogenic but valley cutting by a river is exogenic modification. In exams separate origin from later change.

Correct answer: B. Plate interaction increases internal stress and magmatic activity there

At plate boundaries compression tension and magma activity increase endogenic events. In exams treat plate boundaries as endogenically active zones.

Correct answer: A. It is driven by flowing surface water using external energy

River erosion occurs at the surface through water and gravity. In exams treat water wind ice and waves as exogenic agents.

Correct answer: A. A condition after which even a small change can trigger rapid landform response

If slope water or stress crosses a limit landslide or erosion may suddenly increase. In exams understand threshold as a critical process limit.

Correct answer: B. The process changes rocks at the surface through water, air, or ice

The correct answer is B. The key test is to identify where the process acts and what drives it. Exogenic processes work at or near the surface and use external agents such as running water, wind, glaciers, atmospheric gases, or temperature changes. These agents can weather rock, erode it, transport fragments, and deposit them elsewhere. A is an endogenic clue because internal heat originates inside Earth. C is endogenic because rising magma comes from internal molten material. D is endogenic because plate stress is a tectonic force generated within the Earth system. A surface effect alone does not prove that a process is exogenic; its energy source and agent must also be considered. Memory cue: outside agents shape the outside surface.

Correct answer: B. Because it is linked with deep balance between lithosphere and underlying weak layer

Isostatic adjustment relates to deep density and load balance. In exams deep earth balance should be read as endogenic.

Correct answer: A. Tectonic uplift with simultaneous river erosion

Tectonic uplift raises relief while river erosion cuts it down. In exams distinguish relief creation from relief reduction.

Correct answer: B. Weathering breaks rocks in place while erosion removes and transports material

Weathering breaks or alters rock in place while erosion removes material. In exams use transport as the key difference.

Correct answer: B. Relatively slow because rock is resistant and water is limited

Resistant rock and limited water reduce the rate of erosion. In exams consider rock type and water availability as rate controls.

Correct answer: A. Their dissection and leveling

Rivers and weathering can cut plateaus into dissected forms. In exams call the later change of plateaus exogenic modification.

Correct answer: B. Chemical weathering

Chemical weathering alters rocks in place without immediate removal. In exams it is an example of exogenic weathering.