Mod 2 -- Waygroud Redshift

What happened to the tiny point of matter at the beginning of the universe?

• It turned into a star.

• It disappeared completely.

• It stayed the same size.

• It exploded and started to grow.

What happens to the sound of a siren as it moves away from you?

• It gets louder.

• It becomes higher in pitch.

• It stays the same.

• It becomes lower in pitch.

How do we know that distant stars are moving away from us?

• They look blue.

• Their light becomes brighter.

• They look smaller.

• Their light shifts towards the red end of the spectrum.

What do the black lines in the spectrum of a star's light indicate?

• The star is moving towards us.

• Different elements absorbing light.

• The star is very hot.

• The star is very close.

Does a shift towards the red end of the spectrum mean the object looks red?

• Yes, but only if it's very far away.

• No, it just means a longer wavelength.

• No, it means the object is getting smaller.

• Yes, it always looks red.