Weathering and Erosion Study Guide

Identify the cause of the weathering: Ground squirrels dig a burrow in the ground?

• Animal Actions

• Abrasion

• Acid Rain

• Plant Growth

Identify the cause of the weathering, and is it chemical or mechanical? Lichens grow on rocks and release a weak acid.

• Living Organism/Plant Growth

  mechanical weathering

• Living Organism/Plant Growth causes chemical weathering

• Abrasion/ mechanical weathering

• Abrasion/chemical weathering

Identify the cause of the weathering, and is it chemical or mechanical?

Rainwater dissolves limestone. Cause: Carbon Dioxide. Mechanical or Chemical? Answer: Chemical.

• Carbon Dioxide/Mechanical

• Carbon Dioxide/Chemical

• Acid Rain/Mechanical

• Acid Rain/Chemical

Identify the cause of the weathering, and is it chemical or mechanical?

Particles of sand grind against other rock.

• Abrasion/Chemical

• Abrasion/Mechanical

• Oxidation/Mechanical

• Oxidation/Chemical

Identify the cause of the weathering, and is it chemical or mechanical?

Roots grow into rock breaking it apart.

• Plant Growth/Chemical

• Plant Growth/Mechanical

• Abrasion/Mechanical

• Abrasion/Chemical

Identify the cause of the weathering, and is it chemical or mechanical?

Repeated freezing and thawing breaks apart rocks.

• Ice Wedging/Mechanical

• Abrasion/Mechanical

• Ice Wedging/Chemical

• Abrasion/Chemical

Identify the cause of the weathering, and is it chemical or mechanical?

Rock containing iron turns reddish brown and crumbly

• Acid Rain/Mechanical

• Acid Rain/Chemical

• Oxidation/Mechanical

• Oxidation/Chemical

Fill in the blank: Weathering breaks down rock to form ________, or small pieces of rock.

• sediment

• lava

• crystals

• boulders

Fill in the blank: Weathering occurs faster in ________ and ________ climates.

• wet, hot.

• dry, cold.

• wet, cold.

• dry, hot.

Fill in the blank: When rock is broken into smaller pieces that are chemically the same as the original rock it is ________ weathering.

• mechanical.

• chemical.

• biological.

• erosional.