Collecting Data about Weather: Mastery Test

Richard reads 28.9 inches of mercury on a barometer, which is 1 inch lower than normal atmospheric pressure. The temperature is 40°F. What type of weather is most likely to occur where Richard is?

• fair and dry

• drought

• rain shower

Emily uses a sling psychrometer to measure the relative humidity in her garden. The dry bulb temperature reads 72°F, and the wet bulb reads 60°F. Meanwhile, her friend Jake uses his sling psychrometer to measure the relative humidity at the park. The dry bulb temperature reads 72°F, and the wet bulb reads 65°F. What can you infer from these readings?

• The relative humidity is higher in Emily's garden than at the park.

• The relative humidity is higher at the park than in Emily's garden.

• The relative humidity is the same in Emily's garden and at the park.

Which locations on the map are low-pressure areas?

• A

• B

• C

• D

On Sunday, a strong gale blows near Beth’s house. The best estimate for the wind speed is:

• 32–38

• 39–46

• 47–54

During a cold winter day, the barometer reads 30.2 inches of mercury. What type of weather is most likely to occur?

• clear and cold

• stormy

• humid