Universe

When we see the Andromeda galaxy, we are seeing it as it was 2.3 million years ago. Why?

• it takes light that length of time to travel

• light travels really slow in outer space

• light travels faster than sound

• it is an ancient galaxy

Tags

NGSS.MS-PS4-1

Which does the existance of cosmic background radiation support?

• the Big Bang Theory

• the inflationary model

• critical density

• Hubble constant

Tags

NGSS.HS-ESS1-2

which would cause the universe to collapse in on itself to make a closed universe?

• momentum of outward expanision

• force of gravity

• critical density

• Hubble constant

Our galaxy is called

• Centaurus A

• Andromeda

• the Milky Way

• Triangulum

Which type of galaxy is illustrated?

• spiral

• elliptical

• irregular

• it's not a galaxy

According to latest theories, the Big Bang happened

• 3 million years ago

• about 13.8 billion years ago

• 3 billion years ago

• 4.5 billion years ago

Tags

NGSS.HS-ESS1-2

What is the origin of the cosmic background radiation?

• it is a remnant of the Big Bng

• it is emitted by radio galaxies

• it is dark energy

• it is emitted by stars

Tags

NGSS.HS-ESS1-2

In the Big Bang model, which describes a universe that will stop expanding and begin to contract?

• flat

• open

• closed

• elliptical

Our Sun is just one of many millions of stars in a froup of stars called a

• universe

• solar system

• cosmos

• galaxy

What was in part of the Milky Way prior to 4.6 billion years ago?

• nothing

• a cloud of dust and gas

• other planets

• a supernova star