Term
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Definition
| A person who collects rocks. |
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Term
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Definition
| Solid materials made from one or more minerals. |
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Term
| What are the three (3) classifications of rocks? |
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Definition
- Metamorphic
- Igneous
- Sedimentary
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Term
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Definition
Melted rock that is beneath the earth's surface. |
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Term
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Definition
When magma leaves the volcano. |
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Term
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Definition
| A rock that forms when melted magma or lava cools and hardens. |
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Term
| Give four (4) examples of igneous rock. |
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Definition
- Obsidian
- Granite
- Pumice
- Basalt
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Term
How do sedimentary rocks form?
(4 steps) |
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Definition
- Wind and water change rock into sediment.
- Moving water carries away the sediment.
- The sediment settles to the bottom of a lake or sea.
- Pressure and cementation change lower layers of sediment into rock.
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Term
| Name 2 kinds of sedimentary rock that are formed from dissolved minerals. |
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Definition
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Term
Name 2 kinds of sedimentary rock that are formed when dissolved minerals crystallize (without any sediments).
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Definition
- Limestone
- Rock salt (halite)
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Term
| Name 2 kinds of sedimentary rock that are formed when remains of animals and plants become compacted. |
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Definition
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Term
| About how much of our land is made up of sedimentary rock? |
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Definition
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Term
How does metamorphic rock form?
(3 steps) |
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Definition
- The rock becomes buried under the surface of the earth.
- Great heat and pressure act on the rock deep within the earth.
- The rock slowly folds and changes into metamorphic rock.
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Term
| What 2 conditions are needed in order to change rocks into metamorphic rocks? |
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Definition
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Term
Name 3 kinds of metamorphic rocks. |
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Definition
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