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Card 16

Front

What is the evidence for the universe is expanding?

Back

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Card 17

Front

What is red-shift?

Back

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Card 18

Front

What was the big bang and when did it happen?

Back

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Card 19

Front

Where do most earthquakes and volcanoes occur?

Back

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Card 20

Front

How are volcanoes, mountains, and earthquakes formed?

Back

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Card 21

Front

What is the rock cycle?

Back

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Card 22

Front

What is the evidence for Wegeners thery of continental drift?

Back

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Card 23

Front

What were the reasons against Wegeners theory for continental drift?

Back

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Card 24

Front

What is sea-floor spreading?

Back

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Card 25

Front

What are the layers of the Earth structure?

Back

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