Chapter 20 Univeres

Question 1

Star

Answer 1

Huge spheres of gas

Question 2

Light year

Answer 2

The distance traveled in one year at light speed

Question 3

Red giant

Answer 3

It’s surface is cooler than the core that’s why it’s red

Question 4

White dwarf

Answer 4

Denser than a red giant its core is no longer hot enough to cause fusion

Question 5

Supernova

Answer 5

A huge bright explosion

Question 6

Black hole

Answer 6

Traps all light in it and has the most gravity

Question 7

Nebula

Answer 7

Stars are born in nebulas

Question 8

Galaxy

Answer 8

It’s where loads of stars are.

Question 9

Interstellar matter

Answer 9

It allows for more stars

Question 10

Quasar

Answer 10

Has a huge black hole in the center

Question 11

Neutron star

Answer 11

Also known as pulsars

Question 12

Super cluster

Answer 12

Thousands of galaxy’s

Question 13

Universe

Answer 13

Everything in space and time

Question 14

Red shift

Answer 14

Can be explained by the Doppler effect

Question 15

Blue shift

Answer 15

When an object approaches us it turns to the blue end of the spectrum

Question 16

The Big Bang theory

Answer 16

It is thought that the universe began with a huge explosion 10 billion years ago

Question 17

Dark matter

Answer 17

It might be stars not heavy enough to start fusion