Science Review

What is erosion?

• The height or shape of the land

• The wearing away of rocks

• A process that creates waves.

_____can cause slow changes to Earth's landscape.

• wind

• water

• sand

• all of the above

What events can change Earth's surface quickly?

• floods and landslides

• weathering and erosion

What can cause slow changes to Earth's surface?

• floods and landslides

• weathering and erosion

The process of ______breaks down rocks into smaller and smaller pieces.

• erosion

• weathering

• heating

A(n) ____ is an opening in Earth's surface where melted rock or gases are forced out.

• flood

• earthquake

• volcano

_____ is when rock and soil are moved by wind or water to a new place.

• erosion

• weathering

What is weathering?

• a type of climate
• the movement of rock pieces from one place to another
• the breaking down of rock into smaller pieces
• a force that pulls pieces of rock downhill

Weathering can be created by

• wind
• ice
• water
• all of the above

How can plants cause the weathering of rocks?

• roots can grow into or near rocks causing the rocks to break down over a period of time.

• plants can chemically break down rocks using photosynthesis

• plant roots can use the rocks as a source of nutrients and break them down over time

• plants can release water vapor into the air that causes the rocks to break down over time.