First test after break
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Weathering | The physical and/or chemical breakdown of rock into smaller particles called sediment
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| Why do rocks weather? | They weather because they are adjusting to a new enviorment diffrent from the one they formed in
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| When does weathering take place? | When rocks are exposed to water, air, falls due to gravity, and living things
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| Where does weathering occur? | It occurs near the earths surface
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| What is physical weathering known as? | Mechanical weathering
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| Physical weathering | The breakdown of rocks into smaller pieces without a change in chemical composition
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| What are the 6 most common types of physical weathering? | frost action, abrasion, plant action, exfoliation, expansion and contraction, gravity
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| Abrasion | The grinding away of rocks by friction with other rocks. ex: sea glass
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| Plant Action | A plant grows in a rock and the pressure makes cracks allowing it to grow
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| Exfoliation | The peeling away of outer layers of rocks formed when a release of pressure causes the rock to crack parallel to the surface
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| Expansion and contraction | caused by heating and cooling can cause to break rocks
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| Gravity | As rocks weather, the broken pieces are pulled downhill
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| Chemical weathering | the breakdown of rocks by chemical action that results in a change in the mineral composition of the rock
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| What are the main agents that cause chemical weathering? | Oxidation, hydration, orgaicacid decay, carbonation
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| Oxidation | Occurs when oxygen unites chemically with minerals
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| Hydration | Occurs when water chemically combines with minerals
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| organic acid decay | acid produced from decaying plants or animals dissolve in water and break down rock
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| carbonation | carbon dioxide chemically combines with minerals
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| What does weathering rate depend on? | Surface area and particle size, climate, mineral composition
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| Surface area and particle size | The smaller the particle, the greater the weathering rate
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| Climate | weather always occurs ore in humid climates. Cld regions have physical weathering while hot regions have chemical weathering.
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| Mineral composition | Rocks that are harder are more resistant to weathering
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| Chemical weathering | the breakdown of rocks by chemical action that results in a change in the mineral composition of the rock
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| What are the main agents that cause chemical weathering? | Oxidation, hydration, orgaicacid decay, carbonation
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| Oxidation | Occurs when oxygen unites chemically with minerals
🗑
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| Hydration | Occurs when water chemically combines with minerals
🗑
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| organic acid decay | acid produced from decaying plants or animals dissolve in water and break down rock
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| carbonation | carbon dioxide chemically combines with minerals
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| What does weathering rate depend on? | Surface area and particle size, climate, mineral composition
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| Surface area and particle size | The smaller the particle, the greater the weathering rate
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| Climate | weather always occurs ore in humid climates. Cld regions have physical weathering while hot regions have chemical weathering.
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| Mineral composition | Rocks that are harder are more resistant to weathering (they weather harder)
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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