Weathering and Soil Formation

A piece of sandstone changing color (from brown to rusty red) from exposure to water and air is an example of:

• mechanical weathering

• chemical weathering

The formation of large cracks in the face of a mountain from ice wedging is an example of:

• mechanical weathering

• chemical weathering

Tags

NGSS.MS-ESS2-2

Dark nutrient rich part of soil that is made of recently decomposed material

• Clay

• Loam

• Top Soil

• Humus

Weathering is the physical or chemical breakdown of

• rocks

• water

• humus

• chemicals

Tags

NGSS.MS-ESS2-2

Chemical weathering changes a rock's

• pore space

• exfoliation

• texture

• composition

Which of the following affects the rate at which a rock weathers?

• contour

• surface area

• pore space

• texture

A rock will weather more quickly in a hot, wet environment than in a cold, dry environment. This is an example of how

• climate affects soil formation

• climate affects rock formation

• landforms affect soil formation

• landforms affect rock formation

In a soil profile,most organic material is foiound in the

• B horizon, which contains material washed down from above

• C horizon, which is the deepest layer of the soil

• A horizon, which is the upper layer of the soil

• the layer of dead leaves on the surface of the ground

Most of the matter that breaks down to form humus comes from

• rocks

• clay

• plants

• minerals

Tags

NGSS.MS-LS2-3

Which of the following statements about soil is true?

• Soil forms at the same rate everywhere

• Soil is an unlimited resource

• Soil naturally forms at a rapid rate

• Soil supports the growth of plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3