Big Bang Quiz

About how old is the universe?

•  14 billion years

• 4.5 billion years

Before the Big Bang, which of these existed?

• time

• space

• matter

• none of the above

As the universe expanded it…

• heated up

• cooled down

From the options below, which of these events occurred first?

• protons and neutrons formed

• stars formed

When a star is moving away from an observer, the light is…

•  green-shifted

•  red-shifted

When a star is moving toward from an observer, the light is…

•  blue-shifted

• yellow-shifted

What caused the early materials to clump together?

• pressure

• gravity

Which elements were the first to form after the Big Bang?

•  hydrogen & helium

• oxygen & nitrogen

Compared to present-day galaxies, early galaxies were...

•  farther apart

• closer together

Currently, the universe is…

• expanding

• retracting