Earth's Changing Surface

The natural process of breaking down rock is called...

• deposition

• weathering

• sediment

• erosion

Earth's surface is changed by...

• cracks formed in the Earth's outer layer

• mountain ranges

• weathering, erosion, and deposition

• fossil records

Eroded materials deposited in new areas is called...

• sediment

• rock

• dust

• weathering

Weathering and erosion are caused by...

• wind

• water

• living things

• all of the above

When the force of water carries bits of rock and soil and grinds down rock, this process is called...

• deposition

• weathering

• settling

• corrosion

The Grand Canyon was formed due to the Colorado River...

• disappearing

• depositing new rock

• flooding the area quickly

• weathering and eroding it over millions of years

When wind deposits sand in one place it forms a...

• volcano

• rock formation

• sand dune

• beach

Rocks can be carved into interesting shapes as a result of...

• wind picking up sand and hitting against rock, breaking off tiny pieces

• birds pecking at them

• lava flowing from volcanoes, forming new land

• the deposition of sand

The Dust Bowl occurred due to...

• tornadoes in the Midwest

• wind picking up loose soil during a drought

• the formation of sand dunes in the desert

• too much rain

Deposition can be caused by...

• beavers building a dam to block the flow of a river

• animals eating plants, which uncovers rock

• a rabbit digging a burrow into the ground

• loosening bits of rock from soil