Gravity

Any object with mass is surrounded by a gravitational field.

• True

• Sometimes

• False

• Never

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

When you drop a hammer and a feather, why does the feather fall slower?

• air resistance causes the feather to slow down

• gravity pulls harder on the hammer than the feather

• gravity pulls harder on the feather than the hammer

• air resistance causes the hammer to fall slower

The force that causes objects with mass to attract one another.

• Weight

• Gravity

• Mass

• Magnetism

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The law that says every object in the universe attracts every other object, and that the force is affected by mass and distance: the greater the mass of an object,

the greater the attraction; the farther apart the objects, the weaker the attraction.

• Newton's First Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's Law of Universal Gravitation

Tags

NGSS.MS-PS2-4

The gravitational attraction between two objects would increase if both masses are –

• increased, and the distance between them is increased.

• increased, and the distance between them is decreased.

• decreased, and the distance between them is decreased.

• decreased, and the distance between them is increased.

Tags

NGSS.MS-PS2-4

Why do planets orbit the Sun?

• The Sun is the only celestial object that has a gravitational pull.

• The Sun’s chemical composition makes it attract planets.

• Only celestial bodies that emit light, like the Sun, can be at the center of an orbit.

• The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

If the distance between Mercury and the Sun were increased, what could be done to maintain the same gravitational force of attraction between Mercury and the Sun?

• Decrease the masses of Mercury and the Sun.

• Decrease Mercury’s speed of orbit around the Sun.

• Increase the masses of Mercury and the Sun.

• Increase Mercury’s speed of orbit around the Sun.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Gravity can be defined as the –

• force of attraction between two or more masses.

• friction created when two objects are in contact.

• energy given off by stars due to nuclear reactions.

• path an object follows as it moves through space.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

In which example is the gravitational force of attraction between the two objects the greatest?

• Example 1

• Example 2

• Example 3

• Example 4

Tags

NGSS.MS-PS2-4

The force that pulls two objects towards each other;

the greater the mass of an object, the greater the attraction; the further apart the objects,

the weaker the attraction.

• Gravitational Attraction

• Gravity

• Magnetism

• Weight

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5