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GEOGRAPHY
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Q5. What is an earthquake? What causes an earthquake?
Q6. What are lagoons? Name a state in India which is famous for its lagoons?
Q7. Name and explain the landforms formed by the action of wind.
Q8. Describe the composition of the atmosphere.
Q 9. What are the main gases in the atmosphere? Write the characteristics of each of the gases.
Q 10. Give reasons :-
a) Amount of Insolation decreases from equator towards poles?
b) The quality of water is deteriorating.
c) Flood plains are very fertile. d)Limestone is changed into
marble.
e) Man modifies his environment.
Q11. Distinguish between :-
a) Intrusive and extrusive rocks. b) Dormant volcano and Extinct volcano
c) Weather and Climate.
Answers
Answer:
Q5) An earthquake is caused by a sudden slip on a fault. ... When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.
cause - These movements categorized into three types: constructive, destructive, and conservative. Constructive is when two plates move away from each other, they correspond to mild earthquakes. When two plates move towards each other and collide, this is known as destructive plate boundaries.
Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. ... When the rocks break, the earthquake occurs.
Kindly ask the question one by one ...!