Earth Ocean and Atmosphere

____________ air rises because it is ____________dense.

• Cool, Less
• Warm, Less
• Cold, More
• Warm, More

____________ air sinks/falls because it is ____________dense.

• Cold, More
• Warm, Less
• Cold, Less
• Warm, More

___________________ currents happen because hot materials rise, cool off, then fall, replacing the risen air.

• Wind
• Sun
• Convection
• Earth

The ______________is what drives convection currents on Earth, which contribute to: _______________     and   ___________________.

• Moon, sunburn and pollution
• Wind, Sea Breezes and Land Breezes
• Ocean, Hot and Cold
• Sun, Sea Breezes and Land Breezes

Ocean Currents coming up from the Equator on the Eastern coast of the US are ____________________.

• Cold
• Warm

Ocean Currents coming down from the North Pole along the West coast are ______________.

• Warm
• Cold

A front is when 2 air masses of different temperatures meet, and usually the _________________air is forced up by the _____________air.  

• cold, warm 
• cold, rain
• warm, rain
• warm, cold

A *Weather front symbols point in the direction the front is moving*

• True
• False

The weather changes ______________the front has reached an area

• Before
• After
• During
• Never

On a map, the temperature change is shown ____________________ the front symbol.

• Ahead of 
• Next To
• Behind