What is the Universe?

What does the universe include?

• Only planets and stars

• Only space and time

• All of space, all matter and energy, and even time itself

• Only the Milky Way galaxy

Tags

NGSS.HS-ESS1-2

Earth and the Moon are part of the universe, as are the other planets and their many dozens of _________?

• moons

• oceans

• mountains

• rivers

Tags

NGSS.MS-ESS1-1

Most stars in the Milky Way galaxy have their own planets, known as _________.

• exoplanets

• asteroids

• comets

• nebulae

The Milky Way is but one of billions of ________ in the observable universe.

• galaxies

• planets

• stars

• asteroids

Tags

NGSS.MS-ESS1-2

All the stars in all the galaxies and all the other stuff that astronomers can’t even observe are all part of the universe.

• True

• False

How far above your head does outer space begin?

• 1 mile (1.6 kilometers)

• 62 miles (100 kilometers)

• 500 miles (800 kilometers)

• 8,000 miles (12,800 kilometers)

According to the passage, what makes Earth special in the cosmos?

• Earth is a tiny, fragile exception in the cosmos because it is hospitable for life as we know it, unlike most of the universe which is a hostile and merciless environment.

• Earth is the largest planet in the cosmos and contains the most water.

• Earth is the only planet that has no atmosphere in the cosmos.

• Earth is the center of the universe and all other celestial bodies revolve around it.

Tags

NGSS.HS-LS2-5

According to scientists, how old is the Earth?

• 2.5 billion years

• 4.6 billion years

• 6.2 billion years

• 13.8 billion years

Tags

NGSS.HS-ESS1-5

How old is the universe, as estimated by scientists?

• 4.6 billion years

• 6.2 billion years

• 13.8 billion years

• 20 billion years

Tags

NGSS.HS-ESS1-2

Fill in the blank: Scientists have learned that our planet and the solar system formed around ____ billion years ago.

• 4.6

• 1.2

• 10.5

• 2.8

Tags

NGSS.HS-ESS1-6

NGSS.HS-ESS2-1