1. Review for Quiz
Friday 9/14

2. Heat Transfer Radiation – transfer of heat through waves
Example: Sun heating the Earth
Convection – transfer of heat by the movement of fluids (cold sinks, hot rises)
Example: Boiling water
Conduction – transfer of heat through direct contact
Example: Touching a hot stove
Heat Transfer

3. 4. Darker material absorbs more heat because it reflects less light.
5. Lighter material absorbs less heat because it reflects more light.
6. Land heats up faster than water
7. Land cools down faster than water
8. Inland cities have more of a temperature difference between night and day than coastal cities
9. Inland Cities have hotter summers and cooler winters than coastal cities
Radiation

4. Convection 10. Warmer fluids rise because they are less dense
Warmer fluid molecules are farther apart which makes them less dense
11. Cooler fluids sink because they are denser
Cooler fluid molecules are closer together and more compact which makes them denser
Convection

5. Density 12. Mass/Volume = Density
Mass – amount of matter in an object
Volume – amount of space an object takes up
Density – amount an matter (stuff) in a given volume
13. The densest objects are found at the bottom
14. The least dense objects are found at the top
Density

6. 15. Most of the sun light is either reflected or absorbed by the atmosphere
Less sunlight reaches the Earth’s surface during a cloudy day which makes it cooler. The thicker clouds can absorb more sunlight.
16. Only half of the sun’s energy is absorbed by the land and water and changed into heat.
17. During the night the Earth’s surface releases heat absorbed during the day to keep the Earth warm
Sun’s Energy

7. 18. The Greenhouse Effect is the process in which heat is trapped in the atmosphere by gases that form a blanket around the Earth.
Greenhouse Effect