Unit 6 Review

Charles examines a soil sample near his house and notices the soil has a coarse texture. Which factor best explains why the soil has this texture?

• lack of precipitation

• frequent precipitation

• cold, wet climate conditions

• hot, humid climate conditions

A newly constructed house is located on a 1-acre plot of mostly cleared land. Which method would work best to conserve the soil on this plot of land?

• adding fertilizer

• irrigating the soil

• planting grass

• plowing the land

How can land developers reduce soil loss?

• by decreasing the amount of crops planted

• by increasing the amount of irrigation on cleared land

• by decreasing the number of trees removed

• by increasing the size of cleared land areas

Tags

NGSS.MS-LS2-5

NGSS.MS-ESS3-4

Jasmine wants to remove a large number of plants from her yard. How could these changes most likely affect the overall environment of the yard?

• Removing the plants could increase soil erosion.

• Removing the plants could increase the available habitat.

• Removing the plants could increase sedimentation.

• Removing the plants could increase soil quality.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is most likely to cause erosion of exposed soil?

• rock formation

• water

• plant roots

• earthworms

Tags

NGSS.MS-ESS2-2

What is predicted to occur if a farmer plants the same type of crop in a field each season?

• The nutrients in the soil will be depleted more each year.

• The soil in the field will be healthier after each year.

• The crops will grow stronger and healthier each year.

• The crops will need to be watered more each year.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is a result of deforestation?

• increased wildlife habitat

• decreased carbon dioxide levels

• increased soil erosion

• none of these

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Why is rotating crops important?

• to maintain soil nutrients

• to prevent chemical weathering

• to restore rock particles to the soil

• to prevent the soil from compacting

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

How does plowing a field perpendicular to the slope of a hill help maintain good soil quality?

• It allows water to fill underground reserves.

• It adds nutrients into the soil.

• It prevents pests from burrowing in the soil.

• It prevents water runoff.

A farmer plows a field but leaves it unplanted for several years. How will this most likely affect the soil in the field?

• The soil will erode.

• The size of the soil particles will decrease.

• The soil horizon will change.

• The soil pH will change.

Tags

NGSS.MS-LS2-1