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5. Modern houses have systems to control internal air temperatures in times of very cold or hot weather. In these homes, hot or cool air is pumped into the interior of the house to help keep the temperature comfortable. Based on what you know about how cool and warm air circulate in the atmosphere, what might an engineer need to consider when designing a heating/cooling system for a home in a cooler climate? How might the design differ for a house found in a warmer climate?

6. How does the density of air affect its movement in a convection cell?

7. Why does the wind tend to blow from over the water to over the land on a sunny day?

8. Which statements are true about why wind tends to blow from over the water to over the land on a sunny day? Highlight all the statements that apply.

A. Air over the water is cooler than air over the land is.

B. The air above the land has greater density.

C. The wind is caused by differences in density.

D. Cool, dense air from over the water flows toward the land, pushing warm air upward.