G5 UNIT 9 TEST - CHAPTER 8 Universe

What causes the seasons to change?

• The Earth's distance from the Sun

• The waming and cooling of Earth's core

• Because the Earth's axis is tilted 23 degrees relative to the sun

• The Earth rotation on its axis.

What two things affect the gravity of an object?

• length & height

• mass & distance

• color & mass

• volume & distance

As distance between objects increases the pull of gravity...

• increases 
• decreases 
• Stays the same 

Gravity is a _____ that _____

2 objects towards one another.

• thing

  reaches

• energy

  pushes

• force

  pulls

• weight

  takes

the tendency of an object to resist a change in its motion

• acceleration
• inertia
• mass
• frame of reference

How long does it take for the Earth to do one rotation on its axis?

• 60 seconds
• 24 hours
• 365 days
• 1 light year

How long does it take the Earth to orbit around the sun?

• 325.0 days
• 365.25 days
• 1 month
• 24 hours

One trip of the Earth around the Sun.

• Revolution

• axis

• sunset

• North Star

How long does it take the moon to orbit the earth?

• 1 year/ 365 days

• 1 day/ 24 hours

• 29.5 days

• 1 hour

How do we see the moon?

• The earth's light reflects on the moon

• The sun's light reflects on the moon