Physical & Chemical Weathering

This freezing water is expanding, causing the crack in the rock to widen (frost action). What kind of weathering is this?

• chemical weathering

• physical weathering

Acid rain has worn away the features on this statue. What type of weathering is this?

• chemical weathering

• physical weathering

The rocks in this stream have gradually worn down from the water and particles in the water rubbing on them over time (abrasion). What kind of weathering is this?

• chemical weathering

• physical weathering

Burrowing animals like this one dig holes in the ground, breaking up soils. What kind of weathering is this?

• chemical weathering

• physical weathering

Does this show signs of physical or chemical weathering?

• Physical Weathering

• Chemical Weathering

Does this show signs of physical or chemical weathering?

• Physical Weathering

• Chemical Weathering

The breakdown of rock material by physical and chemical processes is called...

• weathering 
• erosion
• oxidation
• deposition 

Temperature changes can cause

• physical weathering

• chemical weathering

the process by which layers or sheets of rock gradually break off

• exfoliation
• abrasion
• erosion
• deposition

Statue of Liberty has changed colors over time because oxygen has caused the surface of the copper it is made of to change into a new chemical (just like copper pennies turn green). What kind of weathering is this?

• chemical weathering

• physical weathering