Understanding Station Models, Relative Humidity, and Dewpoint

What is the relative humidity when the dry-bulb temperature is 16°C and the wet-bulb temperature is 14°C?

• 90%

• 80%

• 14%

• 13%

Tags

NGSS.MS-ESS2-5

Which weather variable can be determined by using a psychrometer?

• Barometric Pressure

• Cloud Cover

• Relative Humidity

• Wind Speed

Base your answer to the following question on the graph below. The graph shows air temperature and relative humidity at a single location during a 24-hour period.

What was the approximate change in relative humidity from 12 noon to 4 p.m.?

• 10%

• 15%

• 20%

• 30%

Tags

NGSS.MS-ESS2-5

What is the relative humidity when the drybulb temperature is 16°C and the wet-bulb temperature is 10°C?

• 6%

• 14%

• 33%

• 45%

The data table below shows the dry-bulb and wet-bulb temperatures measured with a psychrometer on four different days at the same location.

According to the data shown in the table, which day had the highest relative humidity?

• 1

• 2

• 3

• 4

A dry-bulb temperature of 30°C and a wet-bulb temperature of 29°C were recorded at a weather station. What are the relative humidity and the most likely weather conditions?

• Relative humidity is 29% with clear skies

• Relative humidity is 29% with a good chance of snow.

• Relative humidity is 93% with clear skies.

• Relative humidity is 93% with a good chance of rain.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The diagram below represents the wet-bulb and dry-bulb temperatures on a sling psychrometer. What was the relative humidity of the air when these temperatures were recorded?

• 5%

• 17%

• 20%

• 63%

Tags

NGSS.MS-ESS2-5

The diagram below shows dry-bulb and wet-bulb temperature readings for a parcel of air. What is the dewpoint of the air?

• 27°C

• 10°C

• 3°C

• –5°C

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

What is the dewpoint when the air temperature is 28°C and the relative humidity is 47%?

• 8°C

• 13°C

• 16°C

• 19°C

Tags

NGSS.MS-ESS2-5

What is the dewpoint if the relative humidity is 100% and the air temperature is 20°C?

• 0°C

• 10°C

• 20°C

• 100°C