1. Igneous Rocks

2. Igneous Rocks
Igneous rocks are formed from molten rock, which could either be lava or magma, which cools and solidifies.

3. Classifying igneous rocks according to their formation.
Where do they form AND made of magma or lava?
Intrusive (magma) and Extrusive (lava)
How do they cool?
Slow = Large crystals
Fast = Small or No Crystals
What they are made of (mineral composition)?
Mafic (dark) and Felsic (light)

4. Are Magma and Lava Different?
Magma is molten rock that is BELOW the earth’s surface.
Lava is molten rock that is ABOVE the earth’s surface.

5. There are two types of igneous rocks.
Intrusive
Extrusive

6. Intrusive Igneous Rocks

7. INtrusive Igneous Rocks
They form from magma.

8. INtrusive Igneous Rocks
They cool slowly.

9. INtrusive Igneous Rocks
They cool BELOW or IN the Earth.

10. INtrusive Igneous Rocks
They form rocks with LARGE crystals and a coarse grained texture.

11. Extrusive Igneous Rocks

12. EXtrusive Igneous Rocks
They form from lava.

13. EXtrusive Igneous Rocks
They cool fast.

14. EXtrusive Igneous Rocks
They cool on the Earth’s surface or after they EXit the inside of the Earth.

15. EXtrusive Igneous Rocks
They have small crystals, are fine-grained, and smooth. They can also contain air pockets.

16. Tools Gravel Buildings Cleaning Streets Polishing Bridges Gardening
What are they used for?
Tools Gravel
Buildings Cleaning
Streets Polishing
Bridges Gardening