1. Convection in Air Investigation 5, Part 3
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2. Convection in the atmosphere
Sun shines on a large parking lot
The blacktop absorbs some of the radiant energy
What might happen to the atmosphere close to the parking lot?
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3. Convection Chamber
Ice represents the cold temperatures of the atmosphere
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Candle represents a hot location on earth’s surface
Smoke allows you to see the moving air

4. 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.
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Student Lab Notebook P.29

5. 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
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Student Lab Notebook P.29
Moved across the bottom to the candle where it is heated
The process repeats itself
again and again

6. Convection Cell on Earth Draw your rendition accurately on side 2 of lab sheet
Radiation heats Earth’s surface
Cool air contracts and becomes more dense
Warm air expands and becomes less dense
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Student Lab Notebook P.29
Air above surface is heated by conduction and reradiation

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