Weathering Review

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The process that breaks down rocks and other materials on Earth's surface is called

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weathering

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What is mechanical weathering?

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Process through which rocks are physically broken into smaller pieces.

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How does freezing water cause the weathering of rocks?  The freezing water—

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expands cracks and breaks rocks

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How does wind abrasion work? Options: Sediment is blown off a surface from wind., Wind-blown sediment strikes a surface., Wind blows large chunks of rock off a surface., Sediment falls off of a surface on its own.

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Wind-blown sediment strikes a surface.

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The diagrams shows a natural process that weathers rock. Which statement best explains why this process results in weathering?

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water expands when it freezes

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All of the following are causes of physical weathering except... plant growth, wind, acid rain, running water

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acid rain

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Tree roots cause

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physical weathering.

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Physical and chemical weathering both:

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break rocks into smaller pieces.

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Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:

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mechanical weathering

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Picture A is a mountain in the Sierra Nevada. Picture B shows only the west ridge of the mountain range.  What is the most likely reason for the shape of picture B?

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mechanical weathering