Weathering Mechanical and Chemical

What occurs when roots force rocks apart?

• mechanical weathering

• leaching

• ice wedging

• chemical weathering

What reacts with iron to form rocks apart?

• oxygen

• carbon dioxide

• feldspar

• paint

In which region is chemical weathering most rapid?

• cold,dry

• cold, moist

• warm, moist

• warm, dry

Which type of weathering, mechanical or chemical would you expect to have more effect in a polar region?

• chemical

• mechanical

This weathering occurs when chemical reactions dissolve minerals in rocks or change them into different minerals

• chemical

• mechanical

This weathering occurs when rocks are broken apart to physical processes

• chemical

• mechanical

What is NOT an example of mechanical weathering

• growing plants

• burrowing animals

• oxidation

• expanding ice

What is NOT an example of chemical weathering?

• naturally formed acids weathering rocks

• ice wedging

• metallic materials being exposed to oxygen and water over prolonged periods of time

• Some roots and decaying plants give off acids that also can dissolve minerals in rock.

All of the following are direct causes of mechanical weathering except

• ice

• tree roots

• water

• oxygen

Chemical weathering is more rapid in a _________ climate.

• dry

• tropical

• cold

• moderate