Understanding Relative Humidity Concepts

The video tutorial reviews the concept of relative humidity, explaining its significance and how it is affected by temperature and moisture content. It covers how to calculate relative humidity using dry and wet bulb temperatures and discusses the relationship between dew point and relative humidity. The tutorial also includes an analysis of graphs to understand the relationship between humidity and temperature, providing practical examples and questions to reinforce learning.

What does relative humidity indicate?

• The amount of moisture in the air compared to the maximum it can hold at a given temperature.

• The likelihood of snow.

• The absolute amount of water vapor in the air.

• The temperature at which air becomes saturated.

Why is relative humidity important in weather prediction?

• It predicts the occurrence of earthquakes.

• It indicates the likelihood of rain.

• It measures the air pressure.

• It determines the wind speed.

What factors cause daily changes in relative humidity?

• Wind speed and direction.

• Temperature and moisture content.

• Air pressure and altitude.

• Sunlight and cloud cover.

How do you calculate the difference between dry bulb and wet bulb temperatures?

• By dividing the dry bulb temperature by the wet bulb temperature.

• By multiplying the two temperatures.

• By subtracting the wet bulb temperature from the dry bulb temperature.

• By adding the two temperatures.

What is the relative humidity if the dry bulb temperature is 16°C and the wet bulb temperature is 13°C?

• 50%

• 33%

• 91%

• 71%

How is dew point related to relative humidity?

• Dew point is the average of dry and wet bulb temperatures.

• Dew point is the difference between dry and wet bulb temperatures.

• Dew point is the temperature at which air reaches 100% relative humidity.

• Dew point is unrelated to relative humidity.

What is the dew point if the air temperature is 0°C and the relative humidity is 81%?

• -3°C

• 0°C

• 3°C

• 10°C

What happens to relative humidity as air temperature increases?

• Relative humidity decreases.

• Relative humidity fluctuates randomly.

• Relative humidity remains constant.

• Relative humidity increases.

At what time is evaporation most likely to be greatest?

• When relative humidity is high.

• When relative humidity is low.

• When air pressure is high.

• When air temperature is low.

What is the relative humidity at noon if it is 47%?

• 60%

• 50%

• 47%

• 32%