NC Weather

Which best describes why winds at the beach change direction between day and night?

• because the temperatures over land and over water change
• because warm air over land sinks and stays in place over land
• because cool air rises and is replaced by warm air from the ocean
• because cool air sinks and stays in place over land

Which will most likely result from a low-pressure weather system?

• warm temperatures
• cloudy conditions
• clear conditions
• cool temperatures

Which is the best explanation for how air masses move across the United States?

• The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream.
• The trade winds move air masses from west to east across the
  United States.
• The jet stream moves air masses from the Pacific Ocean across the
  United States.
• The warm air of the Gulf Stream causes air masses to move from the
  Atlantic Ocean to the Pacific Ocean.

Which has the greatest effect on wind speed?

• precipitation
• cloud cover
• wind direction
• air pressure

Andy lives in the southern hemisphere. What season does he most likely experience in August?

• spring
• summer
• winter
• autumn

On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?

• stormy
• sunny
• snowy
• hot

Which best describes a characteristic of the jet stream?

• It forms a boundary between a cold air mass and a warm air mass.
• It creates the high winds around the eye of a hurricane.
• It forces the hot air along the equator to rise to areas in North America.
• It causes high pressure air masses to rotate clockwise.

What will most likely result when the jet stream moves south of North Carolina?

• North Carolina will experience tropical weather conditions.
• North Carolina will experience hot, dry weather.
• North Carolina will experience mild weather.
• North Carolina will experience cold weather.

blows to the land from the sea, brings cooler air to the beach, happens during the day

• sea breeze

• land breeze

• beach breeze

• prevailing westerlies

measures air pressure

• barometer

• anemometer

• thermometer

• wind vane