GEO - 3. OUR CHANGING EARTH

___ movements like earthquakes and volcanoes cause mass destruction over the surface of the earth.

• (a) Slow

• (b) External

• (c) Sudden

• (d) Erosional

An earthquake is measured with a machine called a

• (a) Theismograph

• (b) Heismograph

• (c) Seismograph

• (d) Meismograph

The place in the crust where the movement starts is called the

• (a) Waves

• (b) Focus

• (c) Epicentre

• (d) Crust

Which of the following rivers does not form a delta?

• (a) Godavari

• (b) Mahanadi

• (c) Narmada

• (d) Krishna

Natural cavity of weak rocks formed by action of waves

• (a) Sea arches

• (b) Stacks

• (c) Sea caves

• (d) Sea cliff

The place on the surface above the focus is called the

• (a) Vent

• (b) Earthquake

• (c) Cater

• (d) Epicentre

When the river tumbles at steep angle over very hard rocks or down a steep valley side it forms a

• (a) Seafall

• (b) Waterfall

• (c) River fall

• (d) Ocean fall

Which of the following is NOT exogenic force

• (a) Volcano

• (b) Wind

• (c) Sea Waves

• (d) Glaciers

When the wind blows, it lifts and transports sand from one place to another. When it stops blowing the sand falls and gets deposited in low hill like structures. These are called

• (a) Sand dunes

• (b) Stacks

• (c) Mushroom rocks

• (d) Loess

___ is classified as a major earthquake.

• (a) 2

• (b) 7

• (c) 5

• (d) 0.5