Classification of Rocks Quiz

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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?

Metamorphic rocks
Sedimentary rocks
Igneous rocks (correct)
None of the above

Intrusive igneous rocks are formed from the solidification of magma ______ the surface.

below

Name two examples of intrusive igneous rocks.

Granite and diorite. Signup and view all the answers

Which type of igneous rock is formed at a faster rate on the Earth's surface?

Extrusive igneous rocks (A) Signup and view all the answers

What is sedimentary rock formed by?

Deposition and cementation of mineral or organic particles. Signup and view all the answers

Which of the following is NOT a classification of sedimentary rock?

Igneous (A) Signup and view all the answers

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!