Igneous Rocks Worksheet
Explore the formation, characteristics, and types of igneous rocks with this comprehensive worksheet for Grade 8 science students.
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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 molten material?
Sediment
Magma and Lava
Metamorphic rock
Organic matter
2. Which type of igneous rock forms when magma cools slowly beneath the Earth's surface?
Extrusive igneous rock
Intrusive igneous rock
Sedimentary rock
Metamorphic rock
3. The texture of an igneous rock depends on the rate at which the cools.
4. Igneous rocks that form from lava erupted onto the Earth's surface are called igneous rocks.
5. Pumice is an intrusive igneous rock known for its very fine grain size.
True
False
6. Granite is an example of an extrusive igneous rock.
True
False
7. Describe the difference in crystal size between intrusive and extrusive igneous rocks, and explain why this difference occurs.
8. What are two common examples of igneous rocks, and where might you find them?
Observe the image of igneous rock samples below. Identify whether each rock is intrusive or extrusive based on its appearance.
A. Rock Type:
B. Rock Type: