M17 - 2

Question 1

What is gravity?

Answer 1

Gravity is the tendency of objects to attract or pull each other.

Question 2

Fill in the missing words:

More _____ objects excert a stronger gravitational pull than smaller objects over the same _____; and for objects of the same mass, the _____ they are to each other, the stronger the pull of _____ is between them.

Answer 2

More MASSIVE objects exert a stronger gravitational pull than smaller objects over the same DISTANCE; and for objects of the same mass, CLOSER they are to each other, the stronger the pull of GRAVITY is between them.

Question 3

Why can the sun hold all the bodies in he solar system in its orbit?

Answer 3

• The sun is so massive that it has a gravitational pull that is strong enough to hold all the bodies in the solar system.

Question 4

Why do astronauts appear to be bouncing on the moon’s surface?

Answer 4

• The pull of gravity on the moon is weaker than the pull of gravity that we experience on Earth.

Question 5

Name 2 factors that affect an object’s gravity.

Answer 5

1. Mass:
   * An object or body with a great mass will exert a stronger gravitational pull than objects with smaller masses.
2. Distance:

• Massive objects exert a stronger gravitational pull than smaller objects over the same distance.
• Objects with the same mass have a stronger pull, the closer they are to each other.