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Select the main difference between the three types of rocks: sedimentary, metamorphic, and igneous.
The main difference between the types of rocks is how the rocks are formed.
Sedimentary rocks are formed from small particles of materials, such as sand or pebbles.
Metamorphic rocks are formed from changes in heat and pressure under the earth's surface.
Igneous rocks are formed from magna cooling and hardening.
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Select the outer most layer of the Earth.
The outer most layer of Earth is the Crust. The diagram provided illustrates the Earth's layers.
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Select the theory that states that the Earth's outer shell is divided into several plates that glide over the mantle.
Plate Techtonics states that the Earth's outer shell is divided into several plates that glide over the mantle.
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What type of rock could be made out of sand and shells?
Both sand and shells are small materials. A sedimentary rock is formed from small materials, such as sand and shells; thus, sedimentary is the correct answer.
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