Rocks,Limestone, Calcium Carbonate.

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How do you know its an igneous rock?
They are formed when magma or lava solidifies. They are made from interlocking crystals which makes them hard and resistant to erosion. They have small crystals if the liquid rock cooled quickly and large crystals if the liquid rock cooled slowly.
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Sedimentary rock?
Formed when layers of sediment are squashed. They erode more easily than igneous and metamorphic rocks. They are made of rounded grains and may contain fossils.
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Metamorphic rock?
Formed from existing rocks by the action of heat and pressure which causes new interlocking crystals to grow. Marble is one formed by chalk or limestone.
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What is limestone made from?
Calcium carbonate, a raw material used to make glass, cement and concrete.
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What is limestone used for?
Making buildings, base for roads and railways.
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Other cards in this set

Card 2

Front

Sedimentary rock?

Back

Formed when layers of sediment are squashed. They erode more easily than igneous and metamorphic rocks. They are made of rounded grains and may contain fossils.

Card 3

Front

Metamorphic rock?

Back

Preview of the front of card 3

Card 4

Front

What is limestone made from?

Back

Preview of the front of card 4

Card 5

Front

What is limestone used for?

Back

Preview of the front of card 5

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