C2 L1 - Weathering and Soil

What principle do geologists use to make inferences about past geologic processes?

• Uniformitarianism

• Erosion

• Weathering

• Chemical changes

What natural agent of mechanical weathering widens and deepens cracks in rocks?

• Freezing and thawing

• Release of pressure

• Plant growth

• Abrasion

Which agent of chemical weathering combines with iron in the presence of water to form rust?

• Water

• Oxygen

• Carbon dioxide

• Living organisms

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does rust make rock?

• Hard and solid

• Soft and crumbly

• Smooth and polished

• Brittle and fragile

What is the process called when water seeps into cracks in rocks, freezes, and expands?

• Abrasion

• Frost wedging

• Oxidation

• Rusting

Tags

NGSS.MS-ESS2-2

Which agent of mechanical weathering refers to the wearing away of rock by rock particles carried by water, ice, wind, or gravity?

• Freezing and thawing

• Release of pressure

• Plant growth

• Abrasion

What is the product of oxidation when oxygen gas combines with iron in the presence of water?

• Water

• Oxygen

• Carbon dioxide

• Rust

Tags

NGSS.MS-PS1-2

Which agent of chemical weathering includes acid rain?

• Water

• Oxygen

• Carbon dioxide

• Living organisms

What is the type of weathering that breaks down rock through chemical changes?

• Mechanical weathering

• Chemical weathering

• Freezing and thawing

• Plant growth

What is the process called when rock is physically broken into smaller pieces?

• Abrasion

• Frost wedging

• Oxidation

• Mechanical weathering