7H rocks
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each of the black spaces below before clicking
on it to display the answer.
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| What are rocks made out of? | Rocks are made out of different grains.
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| What do rocks have other than grains? | Ricks have mixtures of different minerals.
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| The chemicals in rocks, what are they called? | They are called minerals.
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| The grains in rocks can be in__________ and___________ | different sizes and shapes.
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| The combination of sizes and shapes of grains are called________ | Are called the texture of the rock.
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| What is interlocking? | interlocking is the grains in the rock all fit together with no gaps.
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| Interlocking grains are sometimes called_________ | crystals.
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| How are igneous rocks made and give one example of an igneous rock. | Igneous rocks are made when molten rock cools down. for example Granite.
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| Explain how metamorphic rocks are made and sedimentary rokcks are made? | Metamorphic rocks fprm when existing rocks are heated or squashed. Sedimnetary rocks are formed when tiny grains of existing rocks become stuck together.
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| What is porous? | porous is when some of the rocks has rounded grains that can absorb water because it can get into the gaps between the grains.
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| What is permeable? | Permeable is when water can run through them.
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| What does rain contain? | It contains dissolved gases from the air that make it slightly acidic.
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| What happens when rain falls onto rocks? | It is when rain fall onto rocks it reacts with the minerals in that rock.
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| What happens if its hot for the minerals in the rock? | They expand(get bigger)
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| What happens if minerals in the rock cool down? | They contract(get smaller)
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| Where do physical weathering usually take place? | They normally take place in deserts and often causes sheets of rocks to peel off.
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| What is freeze-thaw action? | It is a type of physical weathering that happens when water gets into a crack in a rock and freezes. The freezing water expands and makes the crack bigger.
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| What is biological weathering? | it is when rocks are worn away or broken up due to the activities of living things.
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| If rocks can fall into a stream or river, they can get___________ | Transported(carried away)
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| What happens to abrasion? | They move by the water, the rock fragments knock against each other and wear away.
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| What is when some of the bits of rock or sand in streams or river called? | It is called sediment.
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| What are Glaciers? | Glaciers are rivers made of ice.
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| What is deposited? | It is when sediments are carried by water or ice when the water slows down or when the ice melts.
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| What is compaction? | Compaction is when it squeezes the water out from the gaps between the grains.
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| Why are they called fossil fuels? | Because they were formed by the remain of plants and animals.
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| How is Coal formed? | Coal was formed when swamps were buried by sediments.
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| How are Oil and natural gas formed? | They are formed when tiny sea plantts and animals became buried by sediments.
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