Erosion

What is the process of moving sediments from location to another?

• Deposition

• Erosion

• Weathering

• Compaction

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 

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

How does freezing water cause the weathering of rocks?  The freezing water—

• keeps the rocks in place
• makes the rocks last longer
• expands cracks and breaks rocks
• causes rocks to fall in landslides

Which agents  break down earth materials?

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

What is an enormous mass of ice moving over land?

• Ice wedging
• Glacier
• Iceberg
• Dune

Rain washing away soil from a hillside

• Weathering

• Erosion

• Deposition

How do sandy beaches form?

• Waves pounding pebbles int smaller and smaller peices

• Wind eroding pebbles into smaller pieces

• Water freezing and thawing the cracks of pebbles

• Rain wearing away rocks into smaller and smaller pieces

How do plants in the soil affect how fast erosion happens?

• It doesn't affect erosion.

• It slows down erosion.

• It speeds up erosion.

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