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18 Cards in this Set
- Front
- Back
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What is the process by which rocks are broken down physically or chemically called
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Weathering
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What is it called when rocks into smaller pieces by physical means
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Mechanical weathering
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Which of the following is an agent of mechanical weathering
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Gravity
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What is the alternate freezing and thawing of soil and rock called
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Frost action
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What type of frost action occurs when a crack in a rock widens from the freezing an thawing of water
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Ice wedging
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What is the grinding and wearing away of rock by other rocks or sand called
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Abrasion
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What causes abrasions of rocks and pebbles in fast flowing streams
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Water
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What causes Abrasion when one rock falls of a mountainside onto another rock
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Gravity
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Which is an example of a plant causing mechanical weathering of a rock
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A tree root causing a rock to crack
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How can animals that live in soil cause mechanical weathering
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By burrowing
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What is it called when rocks break down due to chemical reactions
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Chemical weathering
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Which of the following is a common agent of chemical weathering
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Weak acids
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What kind of weathering takes place when sugar cube dissolves in water
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Chemical weathering
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What is rain, sleet, or snow that contains a lot of acid called
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acid percipitation
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which of the ffollowing can cause acid precipitation
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burning fossil fuels
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what can result from acids in groundwater coming into contract with limestone
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karst features
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what kind of organisms produce acids that slowly break down the rocks they live
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lichens
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when oxygen in the air reacts whith iron, what
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hhfk
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