8.4 Formation and Motion of Galaxies

What force played a major role in the formation of the solar system?

• Gravity

• Pull

• Push

• Magnetism

Tags

NGSS.MS-ESS1-2

Solar system

• The galaxy in which the Sun and Earth are located

• The Sun together with the group of planets and other celestial bodies that revolve around it due to its gravitational pull

• Attraction between two objects with a strength that is proportional to the masses of the objects

• A form of matter with indefinite shape and volume

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

NGSS.MS-PS2-4

Attraction between two objects with a strength that is proportional to the masses of the objects

• Milky Way Galaxy

• Dust

• Solar system

• Gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Gas

• The galaxy in which the Sun and Earth are located

• Tiny particles of matter floating in space; it condenses under gravity to form stars and planets.

• The Sun together with the group of planets and other celestial bodies that revolve around it due to its gravitational pull

• A form of matter with indefinite shape and volume

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

How did planets form?

• Large clouds of rocks pushed together to form spheres.

• Stars and nebulae came together to form planets.

• Bits of dust and gas began to stick together and form clumps.

• Large masses of rock were shaped into round spheres.

How are the inner planets different from the outer planets in the solar system?

• They are farther and made of gas.

• They are closer and made of gas.

• They are farther and made of rocks.

• They are closer and made of rocks.

What type of motion causes all matter in the solar system to align in a disc shape with the Sun at its center?

• Back and forth

• Spinning

• Up and down

• No motion

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Dust

• A form of matter with indefinite shape and volume

• Tiny particles of matter floating in space; it condenses under gravity to form stars and planets.

• The Sun together with the group of planets and other celestial bodies that revolve around it due to its gravitational pull

• Attraction between two objects with a strength that is proportional to the masses of the objects

Tags

NGSS.MS-ESS1-2

About how long ago was the solar system formed?

• 4.6 billion years ago

• 6.4 billion years ago

• 10 billion years ago

• 1 billion years ago

Tags

NGSS.MS-ESS1-2

The galaxy in which the Sun and Earth are located

• Gravity

• Milky Way Galaxy

• Dust

• Gas