Gravity

Which statement BEST compares the force of gravity on a school bus on a school day and a weekend?

• The force would be lower on the school day than the weekend.

• The force would be higher on the school day than the weekend.

• The force would be different on the school day than the weekend.

• The force would stay the same on the school day and the weekend.

Which piece of evidence explains the cause of ocean tides?

• The planet's movement balances out the sun's gravity.

• The sun's gravity is strong enough to move the ocean water.

• The gravity from the moon pulls ocean water towards it.

• The Earth's gravity pulls the ocean back toward its surface.

Tags

NGSS.MS-PS2-4

When does a football hurled across a field have the lowest gravity force?

• when it has just left the quarterback's hand

• when it is traveling up the arc of its path

• when it is at its highest point on its path

• when it is on its way down the arc

Tags

NGSS.MS-PS2-4

Why can a person jump higher on the moon?

• The moon is faster than Earth.

• The moon is slower than Earth.

• The moon has more mass than Earth.

• The moon has less mass than Earth.

Tags

NGSS.MS-PS2-4

Why do the ocean tides ebb (means go out) and flow (change) on a regular cycle?

• The sun's gravitational pull changes with its rotation around Earth.

• The sun's gravitational pull changes with Earth's rotation around it.

• The moon's gravitational pull changes with its rotation around Earth.

• The moon's gravitational pull changes with Earth's rotation around it.

Tags

NGSS.HS-PS2-4

The Earth orbits the Sun because of what?

• Friction

• Electromagnetic attraction

• Gravity

• Interia

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

If the Sun is bigger than the moon, why does the moon have a greater affect on tides?

• The Sun's gravity does not affect water.

• The moon is much closer than the sun.

• Although the moon is smaller than the sun, it has more mass.

• The earth blocks the suns gravitational pull.

Tags

NGSS.MS-ESS1-1

What is the force that keeps planets in orbit around the Sun?

• Electromagnetic force

• Nuclear force

• Gravity

• Friction

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following best explains why astronauts feel weightless in space?

• There is no gravity in space.

• They are too far from Earth.

• They are in free fall, orbiting Earth.

• Their mass is reduced in space.

If the mass of an object is doubled, what happens to the gravitational force it experiences?

• It is halved.

• It remains the same.

• It is doubled.

• It is quadrupled.

Tags

NGSS.MS-PS2-4