4th grade science
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| The wearing away of rocks | weathering
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| The movement of weathered pieces of rock | erosion
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| A natural feature on Earth's surface ; landforms include mountains,hills,valleys,plains,plateaus and coastal features. | landforms
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| the laying down of rock , soil ,organic matter or other material on the surface of the earth | deposition
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| a rapid downhill movement of large amounts of rock and soil | landslide
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| What are 5 examples of landforms? | mountains, plateaus, penisulas, valleys,and canyons
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| what are 4 causes of weathering? | water, ice, temperture change and chemicals
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| why do the cracks in a rock get larger because water has froze in them? | because the ice expands and makes the cracks larger
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| what particles are the first to settle as moving water slows? | the larger pebbles settle to the bottom first
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| list 3 things that cause both erosion and deposition. | water, wind and ice
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| how is a landslide different from other kinds of erosion and deposition? | beause a landslide is a rapid downhill movement
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| what causes magma beneath a volcano to rise to the surface? | gas in magma forces it upward
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| why are some volcanic eruptions more powerful than others? | the temperature and the type of rock that makes up the magma determine the type of eruption
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