concept 4,1

It is a type of caves that is formed when dissolved minerals of Rocks combine again in new shape

1. The disappearance of a sandcastle as a result of its hitting

with the sea waves.

Process in which the moving sediments are dropped in new place

A hill of sand created by wind

1. As a result of breaking down of ………….., sand is formed.

• Rocks

• Glass

• Rubber

• Plastic

The breaking of rocks into smaller particles without changing their properties is Called

• Chemical weathering

• Erosion

• Deposition

• Mechanical weathering

The deep narrow valley with slopes at its sides and often with water stream

flowing through it is known as a…….

• Canyon

• Mountain

• Hill

• River

Lichens produce …………….. on rocks that dissolve minerals Found in these rocks

• Oxygen

• Acid

• Water

• Rains

Give a reason :

Water play an important role in the formation of

limestone caves

Small sand dunes are formed due to strong winds.

• True

• False