1. Which influences both chemical weathering and mechanical weathering?

A. wind

B. tectonic plates

C. plants

D. iron

2. Which is a cause of chemical weathering?

A. gravity

B. wind

C. sunlight

D. acids

3. Which phrase best defines erosion?

A. cementing bits of rock together

B. moving bits of rock from place to place

C. chemically breaking rocks apart

D. physically breaking rocks apart

4. How does solid rock become soil?

A. It breaks down and changes into liquid.

B. It falls apart and combines with particles in the air.

C. It breaks down and combines with water, air, and organic matter.

D. It splits apart and combines with plant roots.

5. Which is made by weathering?

A. ash

B. magma

C. minerals

D. sediments