Weathering and mass wasting

What influences mass wasting?

• air

• force of gravity

• rocks

• earth

Name one type of rapid mass wasting

• weathering

• Rock fall

• creep

Give one evidence of soil creep

• bending of electric posts and communication lines

• presence of water

• cracks by the valley sides

• disconnected roads

What is an avalanche?

• rock fall on a mountain

• water moving down the slope

• sand moving down the slope

• snow and ice blocks movement down the slope

Mass movement is faster

• on a gentle slope

• on plains

• on steep slopes

• in valleys

What is the breakdown of rock into smaller pieces by physical means?

• weathering

• mechanical weathering

• Chemical weathering

• abrasion

True or false: Gravity, plants and animals are agents of mechanical weathering.

• True

• false

True or false, the three forms of abrasion include: water, wind, and gravity.

• true

• false

_______________ is the process by which sheets of rock peel away from a large body of rock because pressure is removed.

• abrasion

• chemical weathering

• exfoliation

• plant growth

Acid precipitation has higher levels of _________ than normal precipitation

• water

• acid

• chemical

• plants