Question

1. what would happen to the air directly above the sand on a hot summer’s day?
2. what would happen to the air directly above the water on a hot summer’s day?
3. how would this difference in air temperature affect the movement of air between the earth’s surface and atmosphere?

Explanation:

1. For question 5: Sand has a low specific heat, so it heats up quickly in sunlight. This transfers heat to the air directly above it, causing the air to warm, expand, and become less dense.
2. For question 6: Water has a high specific heat, so it heats up much more slowly than sand. The air above water warms less than the air above sand, remaining cooler and denser.
3. For question 7: The warmer, less dense air above sand rises, creating a low-pressure area. The cooler, denser air above water flows in to replace the rising warm air, creating a convection current. This movement is a local wind pattern (like a sea breeze).

Answer:

1. The air directly above the sand will warm up quickly, expand, and become less dense.
2. The air directly above the water will warm up slowly, staying cooler and denser than the air over sand.
3. The warmer, less dense air over sand rises, while the cooler, denser air over water moves in to take its place, creating a convection current (local wind flow) between the surface and atmosphere.