Forces, Inertia and Gravity

What forces cause a planet to orbit?

• gravity and orbit
• gravity and inertia
• gravity and mass
• gravity and weight

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

An astronaut weighs ____ in space.

• less
• more
• the same
• 100 Newtons

Tags

NGSS.MS-ESS1-2

You weigh more on a mountain than in a valley.

• True
• False

You weigh more on the beach than on a mountain.

• True
• False

Tags

NGSS.MS-PS2-2

Your mass increases on a large planet with more gravity.

• True
• False

Tags

NGSS.MS-PS2-4

On Earth, which has a greater gravitational force acting on it?

• an iPhone
• a laptop
• a dog
• a car

Tags

NGSS.MS-PS2-4

Gravity on the moon is about 1/6 the gravity felt on the earth. This is because

• the moon is much less massive than the earth
• the earth has a molten core and the moon doesn't
• the moon is so much further from the sun than the earth.
• the moon is so far away from the earth

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

An astronaut's mass ______ in space.

• changes
• increases
• decreases
• stays the same

Which of these two affect the pull of gravity on an object?

• mass and inertia
• mass and distance
• mass and force
• mass and weight

Tags

NGSS.MS-PS2-4

What would happen to the planets in the solar system if the sun’s gravitational force were to suddenly disappear?

• They will stop moving and become static.
• They will stop spinning.
• They will fly away in straight lines.
• They will start moving toward the Sun

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4