Convection lab

Match

Match the following

• the transfer of heat by touching

• the transfer of heat in a fluid (air or water) that rises due to the density differences

• the transfer of heat by infrared waves

Conduction

Convection

Radiation

• Conduction

• Convection

• Radiation

Open Ended

If one beaker contains 100 ml of cold water, and another contains 100 ml of hot water, which beaker contains more molecules?

Open Ended

As you open a refrigerator door, what happens to the air inside?

Open Ended

As you lift the lid from a pot of soup, do the gases that escape rise from the pot, or sink around its base? Why?

Open Ended

If you swim to the bottom of a pool and place a cork on the bottom, will the cork stay in place? Why or why not? Explain.

Open Ended

Both air and water are fluids. What will happen to an area within a fluid that becomes warmer than the surrounding fluid?

Open Ended

Atmospheric pressure is the pressure exerted on earth by the force of gravity pulling the air towards the earth's surface. Where air is rising from the surface, will the atmospheric pressure be increased or decreased?

Open Ended

1. 1. During the lab, what effect did the cups of hot water have on the density of the water directly above them?

Open Ended

2. 2. What happened as a result of this change?

Open Ended

3. A house has a glass "sun space" attached to its south side, which is just a space all around the house, next to the outside wall that holds air. Vents allow air to flow from the house into the sun space, and vice versa. Describe the direction air flow as the air in the sun space is warmed by the Sun.

Open Ended

4. You may have noticed convection cells in a pot of boiling macaroni. Describe the direction of water flow in the pot. The hottest part of the burner is beneath the center of the pot.

Multiple Choice

5. Which situation would result in a decrease in atmospheric pressure at the earth's surface?

• Air gets cold and begins to fall

• Air gets hot and begins to rise

Multiple Choice

6. 6. Above which area would the air become hotter in the afternoon?

• area over a large lake

• a parking lot with blacktop pavement

• Areas with thick fog and mist
• Areas with heavy rainfall and strong winds

Open Ended

7. 7. From your knowledge of onshore and offshore breezes, explain why the wind would blow in from the sea toward the land during the afternoon.

Drag and Drop

8. A "monsoon effect" may happen in the summer as air over a continent becomes much warmer than air over the ocean. As air over the continent becomes hotter, it will begin to ​
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. This causes ​
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pressure over the continent. The flow of air will be toward the ​
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of the continent.

Drag these tiles and drop them in the correct blank above

rise

lower

center

fall

higher

edge

Multiple Choice

9. Think globally now. Which region in our atmosphere is heated most intensely by the sun?

• the south pole

• the north pole

• the equator

Multiple Choice

10. As air near the equator rises, does this become an area of higher or lower pressure?

• lower pressure

• higher pressure

Open Ended

11. What moves in to replace the rising air?

Reorder

12. 12. Number the following stages of atmospheric circulation (1-4) in the order in which they are most likely to occur.

• Uneven heating

• Area of low pressure develops

• Convection

• Wind (movement of air)

1

2

3

4

• 1
• 2
• 3
• 4

Open Ended

13. 13. If hotter air rises, why is air that is closer to the Earth's surface warmer than the air high above it

Open Ended

14. 14. Wind is considered to be a form of "solar energy". Explain why.