6th Grade End of Course Review

What 2 factors affect gravity the most?

• Mass

• Gravitational pull

• Distance

• Weight

What is the definition of a "shooting star" or meteor?

• An object that enters the Earth's atmosphere and burns up

• An object that lands on the Earth's surface

• An object that is floating in space

• An object that has orbited around the sun and left our Solar System.

In this diagram, the man represents the Sun and the ball represents the Earth. Explain the role of gravity and mass using the man and ball with their representations.

• The man is orbiting around the ball.

• The ball would not go around in a circle but go off in a straight line even though the man has the ball on a string.

• The greatest source of gravity would be the man because he is swinging the ball.

• The greatest source of gravity would be the man because he has more mass.

Where is most of the Earth's freshwater located?

• river, lakes, and streams

• underground reservoirs

• Frozen ice caps and glaciers

• oceans

In the ocean, we studied convection currents. Explain the density of warm water and cold water with convection currents.

• Warm water is more dense than cold water.

• Warm water is less dense than cold water.

• Warm water is less dense and will not rise

• Warm water is more dense and will not rise

Convection currents allow heat to be distributed. Name the 3 locations we have studied that have convection currents.

• Oceans, Streams, Earth's mantle

• Earth's atmosphere, Earth's mantle, Earth's crust

• Earth's atmosphere, oceans, Earth's mantle

• Earth's atmosphere, rivers, Earth's mantle

We have experienced large weather patterns called hurricanes. Hurricanes form when warm ocean water does what during the water cycle?

• Cools rapidly

• Evaporates

• Condenses

• Forms precipitation

In an approaching cold front, a large thunderstorm moves into the plains with warm moist air. What type of windstorm would most likely develop with these air masses colliding and the thunderstorm building strength?

• Dust Devil

• Tornado

• Hurricane

• Blizzard

How does wind form?

• Two air masses that collide and form a calm day.

• An air mass that has little to no movement of hot air.

• Two air masses collide that have a difference in air pressure - high pressure and low pressure

• Two air masses that have only one temperature with one air pressure.

Why does the land and sea breezes change directions of air?

• Water temperatures are faster to heat up.

• Water temperatures are quicker to heat up and slower to cool off.

• Land temperatures change slower than water temperatures.

• Land temperatures change quicker than water temperatures.