Planetary Science Review

Which of the following is true about mass and weight?

• Mass and weight are the same thing
• Mass changes when gravity changes but weight stays the same
• Weight changes when gravity changes, but mass stays the same
• Both mass and weight change when gravity changes

You would weigh less on Uranus than you do on Earth. Uranus has more mass than the Earth, so why is the force of gravity lower?

• Uranus has a much smaller radius so you are closer to the center of mass
• Uranus has a much larger radius so you are much farther to the center of mass
• Uranus has the same radius as Earth

The laws of gravity were written in the 1600s by the following scientist

• Darwin
• Newton
• Nye
• Pasteur

Tags

NGSS.HS-PS2-4

The spinning motion of a planet on its axis is its

• Rotation
• Revolution
• orbital period
• orbital radius

Which planet has the shortest orbital period?

• Mercury

• Earth

• Mars

• Neptune

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Which planet has the longest orbital radius?

• Mercury

• Earth

• Mars

• Neptune

Tags

NGSS.MS-ESS1-3

A you move farther away from the sun, how does the orbital period change?

• It doesn't change
• it gets longer
• it gets shorter

Tags

NGSS.MS-ESS1-2

As you move farther away from the sun, how does the orbital speed change?

• The orbital speed stays the same
• The orbital speed gets faster
• The orbital speed gets slower

Tags

NGSS.MS-ESS1-2

The sun's gravity keeps the planets in orbit. How does the force of the sun's gravitation pull change as you move away from the sun?

• It gets stronger
• it gets weaker
• It doesn't change

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

True of False - The moon makes its own light

• True
• False

Tags

NGSS.MS-ESS1-1