| Weathering | More Weathering | Still More Weathering | Soil Formation and Weathering | Soil and Weathering |
| 10 | 10 | 10 | 10 | 10 |
| 20 | 20 | 20 | 20 | 20 |
| 30 | 30 | 30 | 30 | 30 |
| 40 | 40 | 40 | 40 | 40 |
| 50 | 50 | 50 | 50 | 50 |
| Final Question | ||||
True or False. The most important agent of chemical weathering is abrasion.
True or False. The most important agent of chemical weathering is abrasion.
False
True or False. Plant roots that force cracks in rocks farther apart are an agent of mechanical weathering.
True or False. Plant roots that force cracks in rocks farther apart are an agent of mechanical weathering.
True
True or False. The gas that causes rock containing iron to oxidize is carbon dioxide.
True or False. The gas that causes rock containing iron to oxidize is carbon dioxide.
False
True or False. Freezing and thawing are an example of chemical weathering.
True or False. Freezing and thawing are an example of chemical weathering.
False
True or False. Acid rain causes very rapid mechanical weathering.
True or False. Acid rain causes very rapid mechanical weathering.
False
Contour plowing is a practice that involves disturbing the plant cover as 'what' as possible?
Contour plowing is a practice that involves disturbing the plant cover as 'what' as possible?
Little
The loose, weathered material on Earth's surface is called what?
The loose, weathered material on Earth's surface is called what?
Soil
The rate of weathering depends on the type of rock and on the type of soil, climate, loam, or type of humus?
The rate of weathering depends on the type of rock and on the type of soil, climate, loam, or type of humus?
Climate
The grinding away of rock by other rock particles carried by wind, water, or ice is called what?
The grinding away of rock by other rock particles carried by wind, water, or ice is called what?
Abrasion
The process that breaks down rocks and other materials at Earth's surface is called what?
The process that breaks down rocks and other materials at Earth's surface is called what?
Weathering
Fungi, protists, bacteria, and worms are the main soil: weatherers, litter, materials, or decomposers?
Fungi, protists, bacteria, and worms are the main soil: weatherers, litter, materials, or decomposers?
Decomposers
The movement of rock particles by wind, water, ice, or gravity is called what?
The movement of rock particles by wind, water, ice, or gravity is called what?
Erosion
George Washington Carver taught what to Southern farmers in the early 1930's?
George Washington Carver taught what to Southern farmers in the early 1930's?
Methods of soil conservation
What kind of soil is best for growing plants? Clay soil, loam, humus, or sand soil
What kind of soil is best for growing plants? Clay soil, loam, humus, or sand soil
Loam
Plant roots do not cause 'what' of the soil?
Plant roots do not cause 'what' of the soil?
oxidation
What is the process that breaks down rock and other substances at Earth's surface?
What is the process that breaks down rock and other substances at Earth's surface?
Weathering
The area of the Great Plains where wind erosion caused soil loss in the 1930's is called what?
The area of the Great Plains where wind erosion caused soil loss in the 1930's is called what?
Dust Bowl
This refers to the average weather conditions in the area.
This refers to the average weather conditions in the area.
climate
What is the dark colored material that forms as plant and animal remains decay?
What is the dark colored material that forms as plant and animal remains decay?
Humus
What is it called when rock material is full of small holes and air pockets that allow water to enter?
What is it called when rock material is full of small holes and air pockets that allow water to enter?
Permeable
What is the loose, weathered material on Earth's surface in which plants can grow?
What is the loose, weathered material on Earth's surface in which plants can grow?
topsoil
What is the management of soil to prevent to its destruction called?
What is the management of soil to prevent to its destruction called?
Soil Conservsation
Plowing fields along the curves of a slope to prevent soil loss is what?
Plowing fields along the curves of a slope to prevent soil loss is what?
Contour Plowing
The layer of soil that differs in color and texture from the layers above or below it, is the what?
The layer of soil that differs in color and texture from the layers above or below it, is the what?
Soil Horizon
What is the method in which the dead stalks from the previous year's crop are left in the ground to hold the soil in place?
What is the method in which the dead stalks from the previous year's crop are left in the ground to hold the soil in place?
Conservation Plowing
What two factors could cause another Dust Bowl in the future?
What two factors could cause another Dust Bowl in the future?
severe drought and lack of soil conservation
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