Heat Transfer and Temperature Analysis

Mr. Wiggin conducts an experiment at his kitchen table to test two claims about how the sun heats the air. The first claim suggests the sun heats the air directly, while the second claim proposes the sun heats the land first, which then heats the air. Using a lamp to represent the sun, and rocks to represent the land, initial temperatures are measured above the rocks and in the air. After 20 minutes, the temperatures are measured again, showing a rise in temperature above the rocks, supporting the second claim.

What is the purpose of Mr. Wiggin's experiment?

• To determine which claim about heat transfer is more supported.

• To demonstrate how to use a thermometer.

• To grow plants on his kitchen table.

• To show how to set up a kitchen table.

What does the lamp represent in the experiment?

• A light bulb

• The moon

• The sun

• A heater

In the second claim, what role do the rocks play?

• They represent the sun.

• They represent water.

• They represent the air.

• They represent the land.

What was the initial temperature of the air above the rocks?

• 22 degrees Celsius

• 20 degrees Celsius

• 24 degrees Celsius

• 30 degrees Celsius

What was the initial temperature of the air over the empty space?

• 22 degrees Celsius

• 20 degrees Celsius

• 24 degrees Celsius

• 30 degrees Celsius

After 20 minutes, what was the temperature of the air above the rocks?

• 22 degrees Celsius

• 24 degrees Celsius

• 26 degrees Celsius

• 30 degrees Celsius

What was the temperature of the air over the empty space after 20 minutes?

• 30 degrees Celsius

• 22 degrees Celsius

• 24 degrees Celsius

• 26 degrees Celsius

Which claim does the experiment seem to support based on the final temperatures?

• The sun does not affect the air temperature.

• The sun cools the air.

• The sun heats the land, which then heats the air.

• The sun heats the air directly.

What is the significance of the temperature difference observed in the experiment?

• It shows that the sun has no effect on temperature.

• It indicates that the rocks cool the air.

• It supports the claim that the sun heats the land, which then heats the air.

• It proves that the sun heats the air directly.