Igneous Rocks | Science

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Igneous Rocks

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Slide 1
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Igneous Rocks
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Slide 2
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Vocabulary Review
Mineral: natural, solid substance that has a definite chemical composition and physical structure
Magma: melted rock within the earth
Igneous Rock: forms when magma is pushed up from the mantle into the cool crust and hardens into rock
Lava: Magma that reaches the surface
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Question 3
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Q.
Where is lava located?
answer choices
above ground
below ground
in the core
in the mantle
above ground
alternatives
below ground
in the core
in the mantle
answer explanation
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Question 4
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Q.
Where is magma located?
answer choices
above ground
below ground
in the stratosphere
in the thermosphere
above ground
alternatives
below ground
in the stratosphere
in the thermosphere
answer explanation
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Question 5
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Q. Igneous rock that forms when magma hardens beneath Earth's surface
answer choices
Intrusive Rock
Compaction
Extrusive Rock
Intrusive Rock
alternatives
Compaction
Extrusive Rock
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Question 6
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Q. Igneous rock that forms from lava on Earth's surface
answer choices
Organic Rock
Intrusive Rock
Extrusive Rock
Organic Rock
alternatives
Intrusive Rock
Extrusive Rock
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Question 7
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Q.
Which type of igneous rock would be easier to mine?
answer
extrusive
extrusive
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Obsidian is an example of an extrusive rock. Because it cooled and hardened quickly, extrusive rocks have a fine grained texture.
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Granite is an intrusive igneous rock. Because they cool slowly, the crystals are large giving these rocks a coarse texture.
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Question 10
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Q.
Diorite is an intrusive igneous rock. What does this tell you about it?
answer choices
it was formed from lava that erupted onto Earth's surface
it was formed from magma that hardened beneath Earth's surface
it was formed from rapidly cooling lava
it was formed from lava that erupted onto Earth's surface
alternatives
it was formed from magma that hardened beneath Earth's surface
it was formed from rapidly cooling lava
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Question 11
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Basalt is an extrusive igneous rock. What does this tell you about it?
answer choices
it was formed from lava that erupted onto Earth's surface
it was formed from slowly cooling magma
it was formed from magma that hardened beneath Earth's surface
it was formed from lava that erupted onto Earth's surface
alternatives
it was formed from slowly cooling magma
it was formed from magma that hardened beneath Earth's surface
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Question 12
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Pegmatite is a coarse-grained, intrusive, igneous rock. How did it form?
answer choices
rapidly cooling lava
slowly cooling magma
rapidly cooling lava
alternatives
slowly cooling magma
answer explanation
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Question 13
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Rhyolite is a fine-grained, extrusive, igneous rock. How did it form?
answer choices
rapidly cooling lava
slowly cooling magma
rapidly cooling lava
alternatives
slowly cooling magma
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Question 14
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Is this igneous rock, obsidian, fine-grained or coarse-grained?
answer choices
fine-grained
coarse-grained
fine-grained
alternatives
coarse-grained
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Question 15
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Is this igneous rock, porphyry, fine-grained or coarse-grained?
answer choices
fine-grained
coarse-grained
fine-grained
alternatives
coarse-grained
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Question 16
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Q.
What option below is NOT one of the uses of igneous rocks?
answer choices
statues
kitchen counters
building materials
chalkboards
statues
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kitchen counters
building materials 
chalkboards
answer explanation
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