gr3

The breaking down of rocks into smaller pieces

• weathering

• vegetation

• erosion

• deposition

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. 

Which is an example of Erosion?

• Sand being pulled away from a beach by waves.
• Roots of a tree breaking apart a rock
• water in a river smoothing down rocks.

The dropping off of eroded soil and bits of rock

• weathering

• vegetation

• erosion

• deposition

A large sheet of ice that moves slowly over land

• landform

• glacier

• sediment

• delta

the force that pulls objects toward the center of the earth.

• gravity

• frost wedging

• abrasion

• tree root wedging

Acid rain causes the following type of weathering:

• physical
• mechanical
• chemical
• human

Which of the following is an example of mechanical/physical weathering?

• Tree roots growing in cracks of rocks
• Chemicals in the air
• Acid rain
• Oxygen and Carbon Dioxide

What is Earthquake?

• It’s a sudden movement in the Earth’s crust.

• A mountain that builds around an opening in Earth’s crust.

the second layer of the earth.

• crust

• mantel