Weather- EOG Review LNE

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 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.

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

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

The weather forecast indicates that a warm front will be moving into the area in the next 24 hours. Which type of weather will most likely result?

• clear skies and cold temperatures
• clear skies and hot temperatures
• cloudy skies and rainy weather
• heavy snow and ice
  

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

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

Answer explanation

High-pressure systems are associated with descending air, which typically leads to clearer skies and stable weather. Therefore, the most likely weather condition to follow is sunny, rather than stormy, snowy, or hot.

Land heats up faster during the day than water does. As the beach gets warm during the day, it heats the air above it. The warm air rises and cool air from the ocean is pulled in to replace it. So, air flows from the ocean to the land. At night, the land cools faster than the ocean. What most likely happens to the air at the beach at night?

• The air is still.
• The air moves along the coast.
• The air flows from the ocean to the land.
• The air flows from the land to the ocean.

The morning temperature in a city is 41°F. If a sunny, mild day is forecast, which temperature is most likely for 2:00 p.m.?

• 32° F
• 41° F
• 78° F
• 98° F

Which correctly compares low- and high-pressure weather systems?

• A low-pressure system usually brings cool dry air and clear skies, while a high-pressure system brings clouds and precipitation.
• A low-pressure system usually brings clouds and precipitation, while a high-pressure system brings cool dry air and clear skies.  
• A low-pressure system usually brings warm dry air and clear skies, while a high-pressure system usually brings warm moist air and precipitation.
• a low pressure system means air is low to the ground and a high pressure system means air is high above the ground.