Gravitational Force Lesson

Why doesn't the moon crash into the Earth?

• The moon has more mass, so the Earth orbits around it.
• The moon's gravitational force is weak.
• Inertia keeps the moon stationary.
• The moon has a lot of mass and is farther away.

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

as the mass of an object increases, the pull of gravity...

• Increases

• Decreases

• Stays the same

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NGSS.MS-PS2-4

Why do we have a stronger gravitational attraction with Earth than the Sun?

• the sun has a larger mass

• the Earth has a larger mass

• we are closer to center of sun

• we are closer to center of Earth

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NGSS.MS-PS2-4

A force of attraction between objects that is due to their masses.

• Force
• Gravity
• Gravitational Pull
• Weight

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NGSS.MS-PS2-4

If a feather and a hammer are dropped at the same time on the moon, where there is no atmosphere, which one will hit the ground first?

• Neither, there is no gravity on the moon.

• hammer because it has more mass

• feather because it has less mass

• both will hit at the same time, there is no wind resistance

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NGSS.MS-PS2-2

What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

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NGSS.MS-PS2-4

Which of these best describes why your weight (on Earth) would change on another planet?

• Dehydration effects on different planets change weight.
• In general, the smaller the planet, the greater weight
• Different planets have different gravitational pulls
• Weight does not change, no matter where you are.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following will not change in different gravitational fields?

• weight
• force
• mass
• pounds

The force of gravity (mass x gravity) is also known as...

• mass

• weight

• distance

• acceleration

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NGSS.MS-PS2-4

What does magnitude mean?

• type

• size

• distance

• speed