igneous rocks
DESCRIPTION
Igneous Rocks. Explain how the cooling rate of magma affects the texture of igneous rock. . Igneous Rocks. Igneous Rocks. Igneous is Latin for FIRE Forms when molten rock cools and hardens Can form deep in Earth or on surface. Igneous Rocks. Two types: Intrusive igneous rock. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/1.jpg)
Igneous Rocks
Explain how the cooling rate of magma affects the texture of igneous
rock.
![Page 2: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/2.jpg)
Igneous Rocks
• Igneous Rocks • Igneous is Latin for FIRE• Forms when molten
rock cools and hardens• Can form deep in Earth
or on surface
![Page 3: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/3.jpg)
Igneous Rocks
• Two types:– Intrusive igneous rock • Rock formed from cool
and solidification of magma beneath Earth’s surface
• Slow cooling magma = large mineral crystals
• Large crystals = course (rough) grained rock
![Page 4: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/4.jpg)
Igneous Rocks– Extrusive igneous rock • Rock that forms as
result of volcanic activity or cools on Earth’s surface
• Fast cooling = small mineral crystals
• Small crystals = fine (smooth) grained rock
![Page 5: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/5.jpg)
![Page 6: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/6.jpg)
Igneous Rocks
• Summary:– What is an igneous rock?– What is the difference between extrusive and
intrusive igneous rocks?
![Page 7: Igneous Rocks](https://reader034.vdocuments.site/reader034/viewer/2022051700/5681602f550346895dcf4795/html5/thumbnails/7.jpg)
29 November 2011
Objective: Explain how the cooling rate of magma affects the texture of igneous rock.
OUTROWhat’s the difference between intrusive and extrusive?