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

After a 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

• autumn

• winter

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 a 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 around the equator to rise to North America.

• It causes high pressure air masses to rotate clockwise.

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 to the atmosphere.

Which process allows green plants to control the amount of water stored in their leaves?

• precipitation

• condensation

• transpiration

• respiration

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 into vapor.

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

What is the cause of rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America?

• the Gulf stream

• the jet stream

• La Nina

• El Nino