Weather Review

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 ocean
• because cool air sinks and stays in place over land

Which will MOST LIKELY result from a low-pressure weather system?

• Warm temperature
• 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 Unites 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 to the Pacific

What has the greatest effect on wind speed?

• precipitation
• cloud cover
• wind direction
• air pressure

After rain, a puddle of water remains on a sidewalk. After a day of sunshine, the puddle is gone. Which process is MOST responsible for the disappearance of the puddle?

• Precipitation
• transpiration
• evaporation
• condensation

Andy lives in the southern hemisphere. What season does he MOST LIKELY experience in August?

• spring
• summer
• winter
• autumn

Which BEST describes a characteristic of the Jet Stream?

• 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 hot air along the equator to rise in areas in North America
• it causes high pressure air masses to rotate clockwise

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

What MUST occur before clouds can form?

• water vapor must get warmer
• water vapor must lose heat energy
• precipitation must begin to fall and run off
• transpiration must add water vapor to the atmosphere

One morning, Jane notices drops of water on the outside of a window. Later in the day, she notices that the drops have disappeared. What MOST LIKELY caused the drops to disappear?

• the water condensed on the plants around the house
• Energy from the sun caused the water to evaporate
• the water cooled enough to turn into water vapor
• wind blowing on the window turned the water vapor into vapor