Warm Up! Name 3 objects on the right that will float in water.

Warm Up! Name 3 objects on the right that will float in water. Beads, Soda Cap, and the Ping Pong ball will float because they are less dense than water.

The Heat of the Earth Remember: Earths outer core is nearly as hot as the surface of the sun.

Heat Transfer The movement of energy from a warmer object to a cooler object There are three types of heat transfer: 1. Radiation Leave a space 2. Convection 3. Conduction

Radiation The transfer of energy through empty space. (not touching)

Radiation For example sunlight can burn you! (but the doesnt touch you)

Conduction Heat transfer by direct contact (materials that are touching)

Conduction Heat transfer by direct contact (materials that are touching)

Convection Heat transfer by the movement of a heated fluid.

Remember! Density: A measure of how much mass there is in a volume of a substance.

How Convection Works Heated particles rise transferring heat from one part of the fluid to another. Hotter = less dense > rises Colder = more dense > sinks

Convection in Earth’s Mantle The heat from the core creates convection currents that flow through the mantle

Convection in Earth’s Mantle The heat from the core creates convection currents that flow through the mantle

Warm Up! Use your notebook to complete the worksheet on your desk

Think about it What could cause rock to rise through the Earth’s Mantle? - It is hotter and less dense than the surrounding rock. Why might rock sink into Earth’s Mantle? - It is cooler and more dense than the surrounding rock.

Where is convection happening? - Mantle - Outer core To do: 1. Big Book pg. 135 #1-3 small book pg. 17 #1-3 **Use complete sentences** 2. Define the following key terms: continental drift fossil Pangaea