1. Lesson 10 THE ROCK CYCLE
Objective: Explain the characteristics of the three types of rocks and how they fit within the rock cycle.

2. What is a Rock?
Naturally-occurring mixtures of minerals, mineraloids (no crystals), or organic matter.

3. What is the difference between a rock and a mineral?
Rocks are made up of two or MORE minerals.

4. There are 3 different types of rocks;
Igneous
Sedimentary
Metamorphic

5. Igneous Rock
Igneous rocks are formed by magma and lava as it cools. Form in two different ways.
Rock that comes from lava cools very fast = very light/ airy or glassy = Extrusive
Rocks that come from magma are formed under ground = very hard and have more colors = Intrusive

6. Igneous rock

7. Sedimentary Rock
Sedimentary rock is made when sediments (sand, gravel, and dirt) are pressed together over time and become a rock
Sedimentary rock is formed in layers.

8. Sedimentary Rocks
Limestone
Shale
Sandstone
Granite

9. Metamorphic Rock Metamorphic rocks are made from other rocks.
Heat and pressure help change an igneous or sedimentary rock into a new kind of rock (think about how a caterpillar becomes a butterfly)

10. The Rock Cycle

11. Source of energy Sun Provides energy for surface processes
Weathering, erosion, and transport
Earth
Provides internal heat for internal processes
Subduction, melting, and metamorphism