Igneous rocks

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by CHAsarahj
Last updated 4 years ago

Discipline:
Science
Subject:
Chemistry
Grade:
6

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Igneous rocks

2.3 Igneous Rocks

Igneous rocks are classified by their origin, texture, and mineral composition

People throughout history have used igneous rock for tools and building materials

VocabularyExtrusive Rock - igneous rock formed from lava that has erupted onto earth's surfaceIntrusive rock - igneous rock that formed when magma hardened beneath the surface of Earth

Science and the BibleRevelation 8:8 - The angel blew his trumpet, the great mountain, burning with fire, was thrown into the sea, and 1/3 of the sea became bloodPsalms 104:32 - He looks upon the Earth, and it trembles; He touches the mountains, and they smokeDeuteronomy 4:11 - And you came near and stood by the mountain while it blazed with fire to the very heavens, with black clouds and deep darknessGenesis 19:24 - Then the Lord rained down burning sulfur on Sodom and Gomorrah

~ Igneous rocks may form above or below earth's surface ~ Rapidly cooling lava forms fine grained rocks with small crystals or no crystals at all~ Slowly cooling magma forms coarse grained rocks with large crystals.

Andesite - extrusive

Pegmatite - intrusive

Basalt - extrusive

Gabbro - intrusive

Diorite - intrusive

Pumice - extrusive

Rhyolite - extrusive

Scoria - extrusive

Obsidian - extrusive

Granite - intrusive


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