CH 31.3 and 31.4

Question 1

Galaxy

Answer 1

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

Question 2

Milky Way

Answer 2

Our solar system , including our only star- the star- is part of a larger group of stars, dust, and gas.

Question 3

Local group

Answer 3

The milky way is part of a larger 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

all matter and energy in the universe were compressed into a single point.

Question 6

cosmic background radiation

Answer 6

is the residual microwave radiation emitted when the universe was very young.

Question 7

Dark matter

Answer 7

is an invisible form of matter that does not emit any detectable electromagnetic energy of its own.

Question 8

Dark Energyy

Answer 8

is an invisible form of energy that creates a repulsive force causing the universe to expand at a faster rate.

Question 9

What the 3 shapes a galaxy be?

Answer 9

spiral, ,irregular

Question 10

What is the name of the galaxy we are located in?

Answer 10

Milky Way Galaxy

Question 11

What shape is the milky way?

Answer 11

Spiral

Question 12

How many galaxy are in our local group?

Answer 12

50

Question 13

What are the 2 largest Galaxies in the local group?

Answer 13

Andromeda and Milky Way