Class 7th chapter our changing earth

What is a force that breaks down rock into smaller pieces?

• weathering

• erosion

• deposition

• volcanoes

What is a force in which pieces of rock are moved by water, wind or moving ice?

• weathering

• erosion

• deposition

• volcanoes

What are all the agents of weathering?

• wind, water, ice, gravity, plant roots, animals, waves

• sediments, soil, sand

• beaches, deltas and alluvial fans

What is a force in which sediments that have been moved from one place are dropped or released in another place to create new landforms?

• weathering

• erosion

• deposition

• volcanoes

What are all the agents of erosion?

• beaches, alluvial fans, deltas

• water, wind

• water, wind, gravity, waves, moving ice

Weathering . . .

• breaks it

• takes it

• drops it

Erosion . . .

• breaks it

• takes it

• drops it

Deposition . . .

• breaks it

• takes it

• drops it

Which is not an erosional feature of sea waves?

• Cliff

• Beach

• Sea cave

Which is caused by the sudden movements of the earth?

• Volcano

• Folding

• Flood plain