Convection in Air Investigation 5, Part 3 TG- P.169-171

Convection in the atmosphere Sun shines on a large parking lot The blacktop absorbs some of the radiant energy What might happen to the part of the atmosphere close to the parking lot? TG-P.172

Convection Chamber Ice represents the cold temperatures of the atmosphere TG-P.172 Candle represents a hot location on earth’s surface Smoke allows you to see the moving air

Convection Chamber After observing the convection chamber draw a diagram showing the movement of smoke and air in the chamber on page 29 of your lab book. Answer Part 2 questions. TG-P.173 Student Lab Notebook P.29

The process repeats itself How Convection Occurs? Smoke loses heat by conduction when it touches the metal cover Smoke becomes less dense and rose to the cover Smoke was colder and more dense, so it sank TG-P.173 Student Lab Notebook P.29 Moved across the bottom to the candle where it is heated The process repeats itself again and again

Convection Cell on Earth Radiation heats Earth’s surface Cool air contracts and becomes more dense Warm air expands and becomes less dense TG-P.173-174 Student Lab Notebook P.29 Air above surface is heated by conduction and reradiation

Convection Cell The cycle of air where warm air expands and rises, and then air cools and falls back to Earth. TG-P.173-174 Student Lab Notebook P.29