Which correctly describes El Nino?

• An unusual cooling of water in the eastern Pacific Ocean

• A cold current in the atmosphere that flows across the United States

• An unusual warming of water in the eastern Pacific Ocean

• A warm ocean current that flows across the United States

Which will MOST LIKELY bring clouds and precipitation that will last for several days?

• High pressure area

• Cold front

• Stationary front

• Warm front

Which BEST describes cirrus clouds?

• Big, dark clouds that bring rain and thunder

• Low gray clouds that cover the whole sky

• Puffy, white clouds seen in sunny weather

• High, wispy clouds made up of ice crystals

Which tool measures air pressure?

• Thermometer

• Wind vane

• Anometer

• Barometer

In which way are evaporation and condensation similar?

• Both cause increases in air tempurature

• Both cause decreases in the air tempurarature

• Both are caused by the warming of the atmosphere

• Both are caused by changes in heat and energy

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

• Evaporation

• Transpiration

• Condensation

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

• Because the temperatures over land and over water change

• Because cool air sinks and stays in place over land

• 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

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

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?

• El Nino

• La Nina

• The Gulf Stream

• The Jet Stream

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

• Cloudy skies and rainy weather

• Heavy snow and ice

• Clear skies and cold temperatures

• Clear skies and hot temperatures