Igneous Rocks. Formed from the cooling of lava or magma.
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Transcript of Igneous Rocks. Formed from the cooling of lava or magma.
![Page 1: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/1.jpg)
Igneous Rocks
![Page 2: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/2.jpg)
Formed from the cooling of lava or magma
![Page 3: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/3.jpg)
Igneous Rocks are Divided into Two Groups
Intrusive Extrusive
![Page 4: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/4.jpg)
Intrusive Igneous
• Formed from cooling MAGMA• Forms deep INSIDE the Earth’s crust• Crystals have more time to grow, so they are
LARGER• Described as COARSE-GRAINED
![Page 5: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/5.jpg)
Intrusive Igneous Examples
Granite Syenite
![Page 6: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/6.jpg)
Intrusive Igneous Examples
Diorite Gabbro
![Page 7: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/7.jpg)
Extrusive Igneous
• Formed from cooling LAVA• Forms OUTSIDE the Earth• Crystals have LESS time to grow, so they are
SMALLER OR NON-EXISTANT• Described as FINE-GRAINED
![Page 8: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/8.jpg)
Extrusive Igneous Examples
Obsidian Scoria
![Page 9: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/9.jpg)
Extrusive Igneous Examples
Basalt Pumice
![Page 10: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/10.jpg)
Quiz Question 1
• This is an extrusive igneous rock
• It has a glassy texture
• It has been used throughout history to make knives and arrow heads.
![Page 11: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/11.jpg)
Quiz Question 1
• This is an extrusive igneous rock
• It has a glassy texture
• It has been used throughout history to make knives and arrow heads.
• Answer: Obsidian
![Page 12: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/12.jpg)
Quiz Question 2
• Can you name this extrusive igneous rock that is often used in foot-care?
![Page 13: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/13.jpg)
Quiz Question 2
• Can you name this extrusive igneous rock that is often used in foot-care?
• Answer: Pumice
![Page 14: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/14.jpg)
Quiz Question 3
• This is an intrusive igneous rock
• It has coarse-grained texture
• It is composed of the minerals: quartz, feldspar, and mica
![Page 15: Igneous Rocks. Formed from the cooling of lava or magma.](https://reader036.fdocuments.us/reader036/viewer/2022081421/56649ef05503460f94c00baf/html5/thumbnails/15.jpg)
Quiz Question 3
• This is an intrusive igneous rock
• It has coarse-grained texture
• It is composed of the minerals: quartz, feldspar, and mica
• Answer: Granite