Galaxies stars and more

The Milky Way is a this type of galaxy

• elliptical

• globular

• irregular

• spiral

This type of galaxy contains older stars and has very little gas and dust

• spiral

• globular

• irregular

• elliptical

This type of galaxy contains lots of gas and dust, and has no defined shape

• elliptical

• spiral

• globular

• irregular

The zone in our solar system where life may exist is known as the

• dead zone

• habitable zone

• planet zone

• twilight zone

1. How large is the Milky Way Galaxy?

• A. It is the largest galaxy ever observed.

• B. It takes up over half of the known universe.

• C. It cannot be measured or compared.

• D. It is very small when compared to the universe

Tags

NGSS.MS-ESS1-3

Which of the following correctly ranks astronomical objects by size, starting with the smallest?

• A. Earth, sun, solar system, galaxy, universe

• B. Sun, solar system, Earth, universe, galaxy

• C. Universe, galaxy, solar system, Earth, sun

• D. Solar system, Earth, sun, universe, galaxy

Tags

NGSS.MS-ESS1-3

Which of the following best compares the amount of empty space in the universe to the amount of space galaxies occupy? Galaxies...

• take up about half of the space

• take up most of the room in space

• are less than half but more than a fourth of space

• . take up an extremely small amount of space.

Compared to our galaxy, how big is our solar system? The solar system is...

• A. extremely tiny.

• B. about one-tenth of the galaxy.

• C. about one-third of the galaxy.

• D. over half of the galaxy.

Our nearest star neighbor in space, Alpha Centauri, is four light years from Earth. Why will it be difficult to visit?

• It is very bright and hot

• B. We are not sure exactly where it is.

• C. There may be no planets near it.

• D. It is very far away.

What are galaxies made of?

• moons and planets

• two stars orbiting each other

• about one hundred stars

• many millions of stars