Rocks and weathering keywords
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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| Pieces of a mineral with sharp edges. | crystals
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| Tiny, rounded piece of rock. | grain
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| When crystals fit together with no gaps between them. | interlocking
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| The chemicals that rocks are made from. | minerals
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| Two or more different kinds of mineral that are not chemically joined to each other. | mixture
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| Porous rocks can soak up water. | porous
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| The scientific word used to describe the shapes and sizes of the crystals or grains in a rock. | texture
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| When rocks are broken up or worn away by chemical reactions, usually with rainwater. | chemical weathering
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| Rocks that have been worn away or broken up by chemical, biological or physical processes. | weathered
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| When rocks are worn away or broken up due to the activities of living things. | biological weathering
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| Get smaller. | contract
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| The movement of loose and weathered rock. | erosion
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| Get bigger. | expand
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| A type of physical weathering that happens when water gets into a crack in a rock and freezes. | freeze–thaw action
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| A change that does not involve new chemicals. Melting and freezing are examples. | physical change
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| When rocks are worn away or broken up by physical processes such as changes in temperature. | physical weathering
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| When rock fragments bump into each other and wear away. | abrasion
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| When moving water drops rock fragments or grains. | deposits
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| Rock grains and fragments dropped on the bottom of a river, lake or sea. | Fossil fuel formed from the remains of dead plants and animals that lived in the sea.sediment
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| The movement of rock grains and fragments by wind or water. | transport
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| A fossil fuel made from the remains of plants. | coal
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| Any sign of past life that has been preserved in a rock. | fossils
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| Fossil fuel formed from the remains of dead plants and animals that lived in the sea. | natural gas
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| Fossil fuel formed from the remains of dead plants and animals that lived in the sea. | oil
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| Chemicals from rocks that have dissolved in water. | salts
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