6.11 B Gravity

Why don't people on Earth get pulled into the Sun?

• because we can't fly
• because the Earth is smaller than the sun
• because we are closer to the Earth than the sun
• because the sun is larger than the earth

Gravitational force depends on

• mass and density
• weight and distance
• distance and mass
• weight and density

 The pull of gravity on you would be _________________ on the moon.

• less
• the same
• more

If two planets moved three times further apart, their force of attraction would

• increase
• decrease
• stay the same

If the planet Neptune's mass was reduced, which of the following could be done to maintain the same force of gravitational attraction between Neptune and the Sun? 

• Increase the distance between Neptune and the Sun
• Decrease the distance between Neptune and the Sun
• Increase the amount of energy the Sun puts out

Gravity can be defined as the---

• Force of attraction between two or more masses
• friction created when two objects are in contact
• energy given off by starts due to nuclear reactions

If the distance between Mercury and the Sun were increased, what could be done to maintain the same gravitational force of attraction between Mercury and the Sun?

• Decrease the masses of Mercury and the Sun
• Decrease Mercury's speed of orbit around the Sun
• Increase the masses of Mercury and the Sun

Which of the following governs the motion of our solar system? 

• Magnetism
• Gravity
• Friction

The force of gravitational attraction between the Sun and Jupiter could be increased by reducing which of the following? 

• the mass of the Sun and Jupiter
• The distance between the Sun and Jupiter
• The speed of rotation of Jupiter

If you travel to Jupiter, will your mass or weight change?

• Mass
• Weight