Weathering, Erosion, and Soil - Section 7.1 Weathering

In your textbook, read about weathering. In the space at the left, write true if the statement is true; if the statement is false, change the italicized word or phrase to make it true. 1. Weathering is the process by which rocks on or near Earth’s surface break down and change.

• true

• false

Mechanical weathering changes the chemical composition of rocks.

• True

• False

Weathering rate depends on temperature.

• True

• False

The repeated thawing and freezing of water in the cracks of rocks is called frost wedging.

• true

• false

Water, oxygen, carbon dioxide, and acids are significant agents of mechanical weathering.

• true

• false

Oxidation occurs in the decomposition of iron ore.

• True

• False

The chemical reaction of carbon dioxide with other substances is called oxidation.

• true

• false

The process by which outer layers of rock are stripped away is called

• chemical weathering

• oxidation

• exfoliation

• frost wedging

In which of the following climates would physical weathering most readily occur?

• wet and warm

• dry and warm

• wet and hot

• dry and cool

Buildings and monuments that are made of limestone are greatly damaged by

• freezing

• acid precipitation

• oxidation

• frost wedging