Vocab section 3&4

Question 1

Galaxy

Answer 1

a large group of stars, dust and gas held together by gravity

Question 2

Milky Way

Answer 2

part of a larger group of stars, dust and gas

Question 3

Local Group

Answer 3

local group of galaxies

Question 4

Cosmology

Answer 4

The study of how the universe began how it continues to change and what it is made of

Question 5

Big bang theory

Answer 5

how the universe was formed

Question 6

Cosmic background radiation

Answer 6

the residual microwave radiation emitted when the universe was very young

Question 7

Dark matter

Answer 7

and invisible form of matter that does not emit any deflectable electromagnetic energy

Question 8

Dark energy

Answer 8

an invisible form of energy that creates a repulsive form

Question 9

What is the name of the effect that shows the changes in lightwaves

Answer 9

doppler effect

Question 10

How long ago did the bigbang occur

Answer 10

13.7 billion years ago

Question 11

What 3 shapes can galaxies be

Answer 11

spiral, elliptic irregular

Question 12

What is the universe made of

Answer 12

regular matter which is the actual you can see and dark matter which is invisible

Question 13

what is the name of our galaxy

Answer 13

Milky way

Question 14

Where are we located in the milky way

Answer 14

in the center of one of the arms

Question 15

how many galaxies make up our local group

Answer 15

about 50

Question 16

what are the largest galaxies in our local group

Answer 16

Milky Way, andometa

Question 17

what shape is the milky way galaxy

Answer 17

spiral