8th Grade Unit 8 Earth’s Oceans and Atmosphere

Warm air ____________ while cold air _____________.

• Sinks; rises

• Rises; sinks

What is the main cause of global convection currents?

• Uneven heating of the Earth’s surface

• Greenhouse effect

• Global winds

• Jet streams

Which of the following is not a global wind?

• Trade winds

• Polar Easterlies

• Sea Breezes

• Westerlies

Sea breezes are a local wind that develops during the ______.

• Nightime

• Daytime

____________ is the form of energy that causes water in the ocean to evaporate.

• Potential

• Kinetic

• Heat

• Chemical

What is ultimately responsible for convection within Earth’s atmosphere that leads to weather patterns?

• Sun

• Moon

• Gravity

• Stars

What are the west to east winds that circle the globe used by weather forecasters and airlines?

• Convection Currents

• Land Breezes

• Polar easterlies

• Jet streams

What surface current carries warm water up the East Coast from the Equator and is responsible for milder temperatures in Florida and Western Europe?

• California Current

• Gulf Stream

• South Equatorial

• North Equitorial

Tropical storms are strengthens by ___________ water.

• Warm

• Cold

Which global wind is located between 30 degrees and 60 degrees latitude, curves to the east and produces snow and rain?

• westerlies

• Polar easterlies

• Trade winds

• Local winds