Unit 8 Review

Which statement best describes gravity?

• There is no dened unit of measurement for gravity.

• Gravity is the force that pulls objects toward a celestial body's center.

• Objects that have a small mass will have no gravitational pull.

• Gravitational pull between two objects decreases as the mass of one increases.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What force keeps the planets from floating off into space?

• Earth's gravity

• Moon's gravity

• Sun's gravity

• Milky Way's gravity

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

When two objects are near each other, which one has a greater impact on their common center of mass?

• the less massive object

• the prettier one

• they have equal impact

• the more massive object

Tags

NGSS.MS-PS2-4

Which statement describes Newton’s Law of Universal Gravitation?

• Mass has little effect on gravity between objects.

• Every object in the universe attracts every other object.

• Gravity pushes objects away from Earth's center.

• Gravity does not act between Earth and the moon.

Tags

NGSS.HS-PS2-4

Which statement best explains why objects are pulled toward Earth’s center?

• Earth has a magnetic force that is strongest at its core.

• The weight of the atmosphere pushes objects toward Earth's surface.

• The strength of the Sun's gravity pushes down on objects at Earth's surface.

• Earth has a much greater mass than objects on its surface.

Tags

NGSS.MS-PS2-4

Where would the moon go if it was not pulled in by Earth’s gravity?

• into outer space

• it would crash into the moon

• it would keep orbiting Earth

• it would fall out of the sky

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What force acts between Earth and the moon?

• motion

• gravity

• mass

• Newtons

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is barycenter?

• all the mass in the universe

• a dwarf planet

• two object's common center of mass

• a barometer

How long does it take the Earth to orbit the Sun?

• 1 day

• 1 week

• one month

• one year

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

How is the moon illuminated?

• it absorbs light from the Earth

• it transforms energy into light

• it reects light from the Sun

• it produces its own light

Tags

NGSS.MS-ESS1-1