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Igneous Rocks
Test Description: Igneous Rocks
Instructions: Answer all questions to get your test result.
1) Which type of rock is heated enough to melt and eventually cools?
A
Metamorphic
B
Igneous
C
Sedimentary
2) What are intrusive igneous rocks?
A
Igneous rocks that stay as magma and cools underground
B
Igneous rocks that come out as lava and cools ON the Earth's surface
3) What are extrusive igneous rocks?
A
Igneous rocks that stay as magma and cools underground
B
Igneous rocks that come out as lava and cools ON the Earth's surface
4) Example of extrusive rock is...
A
Sandstone
B
Granite
C
Shale
D
Obsidian
5) Example of intrusive rock is...
A
Quartz
B
Sandstone
C
Obsidian
D
Granite
6) What determines an igneous rock's texture?
A
Speed of cracking
B
Speed of cooling
C
Speed of erosion
D
Speed of melting
7) What happens when magma/lava cools slowly?
A
Crystals have less time to grow, meaning less crystals
B
Crystals have more time to grow, meaning more crystals
C
Crystals do not grow, meaning no crystals
D
Crystals grow and fall off, meaning no crystals
8) What happens when magma/lava cools quickly?
A
Crystals have less time to grow, meaning less crystals
B
Crystals do not grow, meaning no crystals
C
Crystals grow and fall off, meaning no crystals
D
Crystals have more time to grow, meaning more crystals
9) Which texture is formed when lava/magma cools slowly?
A
Fine-grained texture
B
Coarse-grained texture
10) Which texture is formed when lava/magma cools quickly?
A
Fine-grained texture
B
Coarse-grained texture
11) Can intrusive igneous rocks only be found by digging?
A
Yes, they are made above ground
B
No, they can also be found by erosion/weathering
C
No, they can only be found underground
D
Yes, they can only be found underground
*select an answer for all questions
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