Page 82 - Journeys Through Society-7

Revision Notes

• Exogenic and endogenic forces alter the Earth's surface.
• The movement of the Earth’s lithospheric plates is termed as tectonic movement.
• Tectonic movements are divided into horizontal (tangential) movements and vertical (radial)
movements.
• Horizontal movements give rise to tensional forces and compressional forces that cause faulting
and folding in the Earth's surface.
• An earthquake is a sudden movement of the Earth's surface.
• A volcano is an opening or a vent in the Earth’s crust through which molten magma, ash and gases
come out from below the surface.

Evaluation Corner

Multiple Choice Questions

• Choose the correct option: OMR Sheet
1. This is where an earthquake originates.
Use only blue/black ball
a. Focus b. Epicentre pen to fill the circles. It
should be darkened
c. Hotspot d. Magma
completely and properly.
2. This is an active volcano: Wrong methods
a. Mt Vesuvius b. Mt. Etna
Correct method
c. Mt Kilimanjaro d. None of these
3. A volcano is an opening or a ____________ in the Earth's crust through which
molten magma, ash and gases come out. 1. a b c d
a. rock b. plate

c. vent d. crust 2. a b c d
4. These movements are a result of compressional forces:
a. Divergent plate movements
3. a b c d
b. Convergent plate movements
c. Transform plate movements
d. None of the above 4. a b c d
5. This is a device used to measure the intensity of an earthquake:
a. Barometer b. Seismograph
5. a b c d
c. Richter scale d. Anemometer

NEP Aligned

Understanding Based Questions

A. Fill in the blanks:

1. A ____________ zone is created when two plates, usually an oceanic plate and a continental plate, collide.

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