Weathering and Erosion Review

What is sediment?

• the process of rocks being broken down and carried away
• bits of rock, sand, and silt caused by the weathering of rocks
• the top layer of the soil
• decaying plant or animal material 

The process by which small pieces of rocks and soil are carried away to new locations is called...

• deposition
• erosion
• weathering
• faults

How do plants weather rocks?

• during photosynthesis
• when roots grow into cracks of rocks and expand the rock
• when the plant moves water from the roots to the leaves
• Plants don't weather rocks

Small pieces of rock that have been weathered from a larger rock are known as...

• sand

• sediment

• soil

What is erosion?

• The movement of sediment

• The breaking of sediment

• The dropping of sediment

Which of these is an example of erosion?

• Light shinning onto a mountain

• Rain breaking down rock

• Wind blowing away sediment

• All of the above

When rocks are broken down into smaller pieces

• erosion
• weathering
• sediment

Erosion is...

• the breaking apart, wearing away, or dissolving of rock. 
• the scraping away of materials
• material that comes from the weathering of rock
• the moving of sediment and rock from one place to another. 

What is weathering?

• The process by which
  water, ice, wind or gravity
  moves fragments of rock
  and soil.
• The process by which
  water, ice, wind or gravity
  deposit rock sediments
  and soil in a new place.
• The breaking down of
  Earth’s crust into smaller
  and smaller pieces.

Which agents  break down earth materials?

• wind only
• earthquakes and gravity
• ice and 007
• wind, water, and ice