Weather Review

Which has the greatest effect on temperature in parts of the United States with a moderate climate?

• geographic location
• daily rainfall amounts
• changes in humidity levels
• number of large cities in the area

Which conditions will result in high winds?

• large differences in air pressure
• heavy rains over several days
• increase in evaporation rates
• presence of cirrus clouds

Which causes North Carolina to experience an increase in winter precipitation?

• El Niño
• La Niña
• trade winds
• prevailing westerlies

A class observes high, feathery clouds during their data collection. Which student’s conclusion is most reasonable?

• Anita says the feathery clouds are rain clouds, and it will rain in the next few hours.
• Stacy says the feathery clouds will remain stationary and bring no rain over the next few days.
• Tyree says high clouds mean skies are clearing, and there will be sunny skies the next few days.
• John says high clouds mean a front is coming and will bring clouds and rain in the next few days.

Why is there usually more cloud cover at higher altitudes?

• Air pressure decreases at lower altitudes.
• Air pressure increases at higher altitudes.
• Water vapor condenses at cooler air temperatures.
• Water vapor condenses at warmer air temperatures.

Westerly winds moving across the deserts of the United States toward the East Coast most likely bring which types of conditions to North Carolina?

• cool and dry
• hot and dry
• cloudy and humid
• clear and humid

Which is most likely an effect of the Gulf Stream?

• heavy rains in California
• severe drought in Australia
• milder winter temperatures in Florida

Which MOST affects the path of a weather system in the United States?

• the width of the jet stream
• the speed of the jet stream
• the location of the jet stream
• the temperature of the jet stream

Which effect does cloud cover have on daytime temperatures during summer months in North Carolina?

• Cloud cover decreases temperatures.
• Cloud cover increases temperatures.
• Cloud cover causes temperatures to change rapidly.
• Cloud cover causes temperatures to rise and fall constantly.

Which is most associated with a thunderstorm?

• low air pressure
• high air pressure
• winds blowing from the West
• winds blowing from the East