Exploring Types of Rocks
A Grade 7 science worksheet covering the three main types of rocks: igneous, sedimentary, and metamorphic, their formation, and characteristics.
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Exploring Types of Rocks
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Read each question carefully and answer to the best of your ability. This worksheet will test your knowledge of the three main types of rocks: igneous, sedimentary, and metamorphic.
The Earth's crust is made up of rocks, which are naturally occurring solid masses. There are three main types of rocks, each formed through different geological processes:
1. Which type of rock is formed from the cooling and solidification of molten magma or lava?
Sedimentary
Metamorphic
Igneous
All of the above
2. Fossils are most commonly found in which type of rock?
Igneous
Sedimentary
Metamorphic
All rock types
3. The process by which rocks are broken down into smaller pieces by wind, water, or ice is called .
4. When heat and pressure change an existing rock into a new type of rock, it becomes a rock.
5. Molten rock that flows out onto the Earth's surface is called , while molten rock beneath the surface is called magma.
6. All igneous rocks have large crystals because they cool slowly underground.
True
False
7. Sedimentary rocks are often found in layers.
True
False
Match the rock type to its description.
8. Igneous Rock
a. Formed from compressed sediments
9. Sedimentary Rock
b. Formed from cooled magma or lava
10. Metamorphic Rock
c. Formed by heat and pressure
11. Describe one way an igneous rock can transform into a sedimentary rock.
12. Explain why metamorphic rocks often have a foliated (layered) appearance.
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