Earth's Changing Surface

The process by which natural forces move weathered rock and soil from one place to another is called _____.

• soil conservation

• deposition

• abrasion

• erosion

Landslides, mudflows, slump, and creep are all examples of _____.

• mechanical weathering

• runoff

• mass movement

• soil formation

Mass movement is caused by _____.

• plucking and abrasion

• gravity

• chemical weathering

• erosion and deposition

A river flowing across a wide flood plain begins to form looplike bends called _____.

• rills

• meanders

• outside curves

• deltas

Deltas are built up by _____.

• deposition

• leaching

• abrasion

• erosion

The process by which wind removes surface materials is called _____.

• abrasion

• plucking

• deflation

• inflation

Particles of clay and silt eroded and deposited by the wind are called _____.

• till

• loess

• dust

• sod

Glaciers can only form when _____.

• there is an ice age

• there is a U-shaped valley in the mountains

• the amount of snow exceeds the amount of rain

• more snow falls than melts

The process in which rock fragments freeze to the bottom of a glacier and then are carried away when the glacier moves is called _____.

• plucking

• surging

• valley widening

• abrasion

A small depression that forms when a chunk of ice is left in glacial till is known as a(an) _____.

• arete

• cirque

• fiord

• kettle