Gravity and Formation of Galaxies

The matter in an object, which affects gravitational forces

• Gravitational force

• Force

• Mass

• Weight

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Gravitational forces are always

• Attractive

• Pushing

• repulsive

• objects

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NGSS.MS-PS2-4

What affects the strength of gravity

• Weight and Mass

• Mass and Distance

• Distance and Weight

• Mass and Force

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NGSS.MS-PS2-4

Why do the planets and other celestial objects in our solar system revolve around the Sun?

• The Sun has the greatest mass of any object in the solar system and therefore the greatest gravity

• The sun is the center of the universe

• The sun is the brightest thing in space and everything is attracted to it.

• The Sun has the greatest weight so everything pushes towards it

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Large mass of stars

• Solar System

• Galaxy

• Nebula

• Milky Way

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NGSS.MS-ESS1-2

The gravitational force between two objects can be very small, unless which of the following is true?

• The objects must be very far apart.

• One of the objects must have a very large mass.

• Both objects must have very large masses.

• Both objects must be in the solid state of matter.

Tags

NGSS.MS-PS2-4

If you landed on Mars, what happens to your mass and weight? Remember the force of gravity on Mars is less than on Earth.

• The mass decreases while the weight stays the same.

• The mass stays the same while the weight increases.

• The mass increases while the weight decreases.

• The mass stays the same while the weight decreases.

Which piece of evidence best supports this statement: Gravity is felt between objects across a distance.

• Heavier objects have less gravity acting on them.

• An object at rest on the ground doesn’t respond to gravity.

• The Moon orbits Earth due to a gravitational field.

• Objects float freely in space where there is no gravity.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

Gravity is responsible for which of the following characteristics of a galaxy?

• The motion of the objects within it

• The size of its largest stars

• Its location within the universe

• The color of light it emits

Tags

NGSS.MS-ESS1-2

Which of the following best describes the formation of the solar system?

• The Sun ejected rocky material which formed the planets due to magnetic attraction forces.

• A rotating disk of gas and dust was drawn together by the force of gravity.

• One very large planetary body broke apart into several smaller planets.

• Several stars of different masses cooled and formed the planets and the Sun.

Tags

NGSS.MS-ESS1-2