1. Heating of the Atmosphere

2. What is Thermal Energy? Thermal means “heat.” Thermal means “heat.” Thermal energy is the heat made when molecules move. The faster molecules move, the higher the temperature. Thermal energy is the heat made when molecules move. The faster molecules move, the higher the temperature.

3. Radiation is the transfer of energy as electromagnetic waves is the transfer of energy as electromagnetic waves The earth receives only about two- billionths of these waves The earth receives only about two- billionths of these waves

4. Conduction is the transfer of thermal energy from one material to another by direct contact Conduction is the transfer of thermal energy from one material to another by direct contact Thermal energy always moves from warm to cold areas Thermal energy always moves from warm to cold areas When air molecules come into direct contact with a warm surface, thermal energy is transferred to the atmosphere When air molecules come into direct contact with a warm surface, thermal energy is transferred to the atmosphere

5. Convection Convection is the transfer of thermal energy by the circulation or movement of a liquid or gas Convection is the transfer of thermal energy by the circulation or movement of a liquid or gas As the cool air sinks it pushes the warm air up As the cool air sinks it pushes the warm air up The cool air is eventually heated by the ground and again begins to rise The cool air is eventually heated by the ground and again begins to rise This continual process of warm air rising and cool air sinking creates a circular movement of air called a convection current This continual process of warm air rising and cool air sinking creates a circular movement of air called a convection current

8. Conduction, Convection, and Radiation Video https://www.wisc- online.com/learn/natural-science/earth- science/sce304/heat-transfer--conduction- -convection--radiation https://www.wisc- online.com/learn/natural-science/earth- science/sce304/heat-transfer--conduction- -convection--radiation https://www.wisc- online.com/learn/natural-science/earth- science/sce304/heat-transfer--conduction- -convection--radiation https://www.wisc- online.com/learn/natural-science/earth- science/sce304/heat-transfer--conduction- -convection--radiation

9. The Greenhouse Effect The green house effect is the heating of the Earth caused by gases in the Atmosphere trapping thermal energy. The green house effect is the heating of the Earth caused by gases in the Atmosphere trapping thermal energy.

10. Greenhouse Effect Video https://www.youtube.com/watch?v=BPJJ M_hCFj0 https://www.youtube.com/watch?v=BPJJ M_hCFj0 https://www.youtube.com/watch?v=BPJJ M_hCFj0 https://www.youtube.com/watch?v=BPJJ M_hCFj0

11. Global Warming Gases in the atmosphere that do trap heat energy are called greenhouse gases. Gases in the atmosphere that do trap heat energy are called greenhouse gases. A rise in average global temperatures is called global warming. A rise in average global temperatures is called global warming.

12. Keeping the Earth Livable Some scientists believe that global warming may be a natural process Some scientists believe that global warming may be a natural process Even so, many countries have signed a treaty to find ways to decrease the production greenhouse gases Even so, many countries have signed a treaty to find ways to decrease the production greenhouse gases One of these ways to decrease greenhouse gases is replanting trees when others are cut down One of these ways to decrease greenhouse gases is replanting trees when others are cut down Another way to reduce greenhouse gases is to use solar and wind energy which do not produce these gases. Another way to reduce greenhouse gases is to use solar and wind energy which do not produce these gases. https://www.youtube.com/watch?v=- RMD88DNaGk https://www.youtube.com/watch?v=- RMD88DNaGk https://www.youtube.com/watch?v=- RMD88DNaGk https://www.youtube.com/watch?v=- RMD88DNaGk