Weathering and Erosion

What layer of soil contains organic material?

• bedrock

• humus

• soil

What layer of soil contains sand, silt and clay?

• bedrock

• humus

• soil

What layer of soil contains solid rock?

• bedrock

• humus

• soil

What soil horizon is where the bedrock layer is?

• Horizon C

• Horizon B

• Horizon O and A

What soil horizon is where microscopic bacteria lives?

• Horizon C

• Horizon B

• Horizon O and A

Tags

NGSS.MS-LS1-5

What soil horizon is where clay and weathered rock live?

• Horizon C

• Horizon B

• Horizon O and A

What type of weathering happens when wind moves sand particles and scratches rock surfaces like sand paper?

• Ice wedging

• Plant/animal action

• Abrasion

• Release of pressure

• Thermal Stress

What type of weathering happens when plant roots break apart rocks by growing through them?

• Ice wedging

• Plant/animal action

• Abrasion

• Release of pressure

• Thermal Stress

What type of weathering happens when water freezes in rocks cracks and expands, breaking them apart?

• Ice wedging

• Plant/animal action

• Abrasion

• Release of pressure

• Thermal Stress

What type of weathering happens when rocks move up to the surface and break apart when they are out of the soil?

• Ice wedging

• Plant/animal action

• Abrasion

• Release of pressure

• Thermal Stress