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Questions and Answers
What is rock?
A naturally occurring solid aggregate of minerals and sometimes nonmineral solid particles.
Which type of rock is formed from the cooling and solidification of magma or lava?
Intrusive igneous rocks are formed from the solidification of magma ______ the surface.
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Name two examples of intrusive igneous rocks.
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Which type of igneous rock is formed at a faster rate on the Earth's surface?
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What is sedimentary rock formed by?
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Which of the following is NOT a classification of sedimentary rock?
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Study Notes
Classification of Rocks
- Rocks are aggregates of minerals and may include nonmineral components.
Igneous Rocks
- Formed through the cooling and solidification of magma or lava.
Intrusive Igneous Rocks
- Solidified from magma beneath the Earth's surface.
- Characterized by large mineral crystals due to slow crystallization.
- Examples include:
- Granite
- Diorite
- Gabbro
- Pegmatite
- Peridotite
Extrusive Igneous Rocks
- Formed from the rapid solidification of lava on the Earth’s surface.
- May appear glassy due to reduced crystallization or contain vesicles (air bubbles).
- Examples include:
- Scoria (vesicular texture)
- Andesite
- Basalt
- Dacite
- Obsidian
- Pumice
- Rhyolite
- Tuff
Sedimentary Rocks
- Created by the deposition and cementation of mineral or organic particles.
- Typically form at the bottom of oceans and other bodies of water.
- Classified into three types:
- Clastic
- Chemical
- Organic
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Description
Test your knowledge on the different types of rocks, including igneous, sedimentary, and their classifications. This quiz will cover key characteristics, examples, and formation processes of each rock type. Perfect for geology students or enthusiasts!
