What is igneous rock?
Earth History 4.85 Igneous rock / Earth Layers

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Science
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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Igneous rock is formed from the cooling and solidification of molten rock, either magma (underground) or lava (on the surface).
2.
FLASHCARD QUESTION
Front
What are the two main types of igneous rock?
Back
The two main types of igneous rock are intrusive (formed from magma) and extrusive (formed from lava).
3.
FLASHCARD QUESTION
Front
How do intrusive igneous rocks form?
Back
Intrusive igneous rocks form when magma cools slowly beneath the Earth's surface, allowing large crystals to develop.
4.
FLASHCARD QUESTION
Front
How do extrusive igneous rocks form?
Back
Extrusive igneous rocks form when lava cools quickly on the Earth's surface, resulting in small crystals.
5.
FLASHCARD QUESTION
Front
What is the difference between intrusive and extrusive igneous rocks?
Back
Intrusive rocks have larger crystals due to slow cooling, while extrusive rocks have smaller crystals due to rapid cooling.
6.
FLASHCARD QUESTION
Front
What is the Earth's crust?
Back
The Earth's crust is the outermost layer of the Earth, composed of solid rock and minerals.
7.
FLASHCARD QUESTION
Front
What is the mantle?
Back
The mantle is the thick layer of rock between the Earth's crust and core, composed of semi-solid rock that flows slowly.
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