Regents Weather Factors

Which type of electromagnetic radiation has the shortest wavelength?

• ultraviolet
• gamma rays
• radio waves
• visible light

Which weather change is most likely indicated by rapidly falling air pressure?

• Humidity is decreasing.
• Temperature is decreasing.
• Skies are clearing.
• A storm is approaching.

Earth’s surface winds generally blow from regions of higher

• air temperature toward regions of lower air temperature
• air pressure toward regions of lower air pressure
• latitudes toward regions of lower latitudes
• elevations toward regions of lower elevations

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%

A low-pressure system in the Northern Hemisphere has a surface air-circulation pattern that is

• clockwise and away from the center
• clockwise and toward the center
• counterclockwise and away from the center
• counterclockwise and toward the center

Which type of air mass most likely has high humidity and high temperature?

• cP
• cT
• mT
• mP

An air mass entering Alaska from the northern Pacific Ocean would most likely be labeled on a weather map as

• cP
• cT
• mP
• mT

The dewpoint is 15°C. What is the wet-bulb temperature on a sling psychrometer if the dry-bulb temperature is 18°C?

• 16°C
• 2°C
• 3°C
• 20°C

If the air temperature is 20°C and the relative humidity is 58%, what is the dewpoint?

• 5°C
• 12°C
• 15°C
• 38°C

In which direction do the surface winds blow around a high-pressure system in the Northern Hemisphere?

• clockwise and inward
• clockwise and outward
• counterclockwise and inward
• counterclockwise and outward