Understanding Dew and Humidity

What is the main difference between absolute humidity and relative humidity?

• Relative humidity compares the current water vapor to the maximum it can hold.

• Absolute humidity measures the percentage of water vapor in the air.

• Relative humidity measures the total amount of water vapor in the air.

• Absolute humidity is a practical measure for daily weather forecasts.

What happens when the relative humidity reaches 100%?

• The temperature rises.

• Water vapor condenses into liquid.

• The air can hold more water vapor.

• The air becomes dry.

What is the dew point?

• The temperature at which the air becomes dry.

• The temperature at which air becomes saturated and water vapor condenses.

• The point where rain starts to fall.

• The maximum temperature the air can reach.

How does the ground contribute to the formation of dew?

• The ground remains at a constant temperature, unaffected by the air.

• The ground absorbs all the water vapor, preventing dew.

• The ground heats up slowly, preventing dew formation.

• The ground cools rapidly, cooling the air and increasing relative humidity.

What happens to dew when temperatures drop below freezing?

• It remains unchanged.

• It evaporates back into the air.

• It turns into rain.

• It becomes frost or ice.