Igneous Rocks Worksheet
Explore the formation, characteristics, and types of igneous rocks with this comprehensive worksheet for 6th graders.
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Standards
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Igneous Rocks: Formation and Types
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Igneous rocks are formed from the cooling and solidification of what?
Sediments
Magma or lava
Existing rocks under heat and pressure
Organic matter
2. What is the main difference between intrusive and extrusive igneous rocks?
Color
Where they cool and form
Their density
Their hardness
3. When magma cools slowly beneath the Earth's surface, it forms igneous rocks with large crystals.
4. Rocks formed from lava that cools quickly on the Earth's surface are called igneous rocks and often have very small or no crystals.
5. Describe how the cooling rate of magma or lava affects the crystal size in igneous rocks.
6. Granite is an example of an extrusive igneous rock.
True
False
7. Basalt is a common type of intrusive igneous rock found in oceanic crust.
True
False
8. Look at the image of the igneous rock below. Based on its appearance, do you think it is intrusive or extrusive? Explain your reasoning.
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