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Chpt.10: Weathering
Chapter 10: Weathering- Study Guide
| Term | Definition |
|---|---|
| Name the process by which water, ice, wind, or gravity moves fragments of rock and soil? | Erosion |
| In which horizon do we find only partly weathered rock? | Horizon C |
| In which horizon do we find clay and other particles with very little humus? | Horizon B |
| In what type of climates does chemical weathering occur faster? Hot and wet or cold and dry? | Hot and Wet |
| Define LITTER | The loose layer of dead plant leaves and stems on the surface of the soil. |
| Describe the mechanical weathering agent ABRASION | The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles |
| What is the type of mechanical weathering that ice wedging is categorized under? | Freezing and Thawing |
| What type of weathering will plant roots and animal activity cause? | Mechanical Weathering |
| What are the TWO most important factors in determining the rate of weathering? | Rock Type and Climate |
| Soil is constantly being formed wherever (_______________) is exposed. | Bedrock |
| How do living organisms help maintain soil fertility? | Organisms mix the soil, break down once living things and create humus. |
| What the process where sediment comes to rest in layers? | Deposition |
| Why is a permeable rock weathered easily? | Because it is full of tiny, connected air spaces. |
| Soil is a mixture of…(List the FIVE things) | rock particles, minerals, decayed organic material, air, and water |
| Define HUMUS | Dark-colored organic material in soil. |
| What do decomposers do? | Break down and digest the remains of dead organisms. |
| What type of weathering is occurring when plant roots release WEAK ACID? | Chemical Weathering |
| What is the type of chemical weathering that occurs very rapidly and is created by the burning of fossil fuels that pollute the air and water vapor in clouds? | Acid Rain |
| In which soil horizon is made up of topsoil, a crumbly, dark brown soil that is a mixture of humus, clay and other minerals? | Horizon A |
| In which layer do we find the basic material that forms soil when it is weathered? | Bedrock (Horizon R) |
| In which layer do we find litter and plant growth? | Horizon O |
Created by:
kwalterhouse
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