1. Density

2. What is density? How much stuff is packed into a certain amount of space Ratio of mass to volume Mass Volume Density =

3. How does this relate to the layers of the Earth? Crust Mantle Outer Core Inner Core As you go deeper into the Earth, the density increases.

4. LAYERELEMENTS Crustsilicate rock material (silicon, aluminum, oxygen) Mantleiron, aluminum, calcium, magnesium, silicon, and oxygen. Outer CoreNickel and Iron Inner CoreNickel and Iron

5. WARNING!! Solids are NOT always more dense than liquids

6. True or False As you move closer to the center of the Earth, the density of the layers decreases. A.) True B.) False

7. Changes in Density Increase in pressure = increase in density Increase in temperature = decrease in density If density increases … object sinks If density decreases … object floats

8. What does this have to do with the layers of the Earth?