Earth's Motions

What is rotation?

• the time it takes for earth to travel around the sun (takes 365 days)

• turning

• the time it takes for earth to spin around 1 time (takes 24 hours)

• another word for revolution

How long does it take for earth to revolve around the sun?

• 24 hours

• 48 hours

• 100 days

• 365 days

What is nutation?

• earth's axis wobbling

• another word for precession

• earth's orbit

What causes earth's seasons?

• being really close or really far away from the sun

• the sun getting brighter and dimmer

• earth's tilt and position around the sun

What shape is earth's orbit around the sun?

• circle

• oval

• ellipse

Does the sun make life possible on earth?

• yes

• no

• unsure

Earth traveling around the sun is called a....

• a year

• rotation

• revolution

• orbit

What is precession?

• earth's order in the solar system

• earth's axis spinning/ rotating

• nutation

• wobble

If an ellipse is really narrow/almost a straight line, this ellipse is...

• not very eccentric

• very eccentric

What does eccentricity mean?

• being weird; being eccentric

• how dramatic the ellipse shape of a planets orbit is; how far away from a perfect circle something is

• being a perfect circle