Lesson 1: The Universe

Question 1

The Sun is one of these

Answer 1

Stars

Question 2

Millions of stars together, like the Milky Way.

Answer 2

Galaxy

Question 3

There are 8 in our Solar System.

Answer 3

Planets

Question 4

All the galaxies and everything else that exists.

Answer 4

Universe

Question 5

The planets and other bodies are orbiting the sun.

Answer 5

Solar System

Question 6

When was the universe created?

Answer 6

10-15 billion years ago

Question 7

A huge explosion sent the entire universe flying out at incredible speeds.

Answer 7

The Big Bag

Question 8

The idea that the Universe was suddenly born and is

not infinite.

Answer 8

The Big Bang Theory

Question 9

Approximately 13.8 billion years ago
there was an _______, and from that
all things came to be.

Answer 9

Expansion

Question 10

The Big Bag Theory is a scientific theory about how the ______started,

Answer 10

Universe

Question 11

The universe began as a very hot,

small, and dense superforce called a ________

Answer 11

Singularity (energy, matter, forces of nature, and space were wrapped up in this)

Question 12

This is radiation remaining from the Big Bang explosion and fills the whole of the Universe.

Answer 12

cosmic microwave background radiation(CMB)

Question 13

a way astronomers use to tell the distance of any object that is very far away in the Universe

Answer 13

red shift (this proves that stars and galaxies are moving away from each other)

Question 14

The theory that says divine power brings forth new beginnings

Answer 14

Divine Creation Theory (emphasizes the power of a creator, Diety, or God)

Question 15

act/s by which the world came into existence out of nothing

Answer 15

creation

Question 16

Who used Einstein’s theory of relativity to explain the Big Bang?

Answer 16

Georges Lemaitre

Question 17

Two elements that were abundant after the big bang

Answer 17

hydrogen and helium

Question 18

(T/F)The Big bang Theory suggests that the universe has a boundary and center

Answer 18

False

Question 19

Hypothetical elementary particles in the universe

Answer 19

quarks and gluons

Question 20

The theory that states the universe is infinite in time

Answer 20

steady state theory

Question 21

Who proposed the steady state theory?

Answer 21

Fred Hoyle

Question 22

The theory that says the universe continues to expand and collapse

Answer 22

Oscillating theory

Question 23

proof that universes collapse

Answer 23

blue shift

Question 24

Who discovered that the galaxies are moving apart from one another.

Answer 24

Hubble

Question 25

Who created the equation e=mc^2

Answer 25

Einstein

Question 26

Who proposed two models((1) closed universe and (2) open universe)

Answer 26

Aleksandr Friedmann

Question 27

Time and space both began with a big bang and will end when gravity stops the universe and pull everything back into
one point

Answer 27

Closed Universe

Question 28

Universe began with a big bang and will continue to expand forever

Answer 28

Open universe

Question 29

A telescope was named after who?

Answer 29

Hubble

Question 30

Vesto Slipher found that the light from the

nebulae had frequencies ____ than normal light

Answer 30

lower

Question 31

when light moves towards the

red end of the visible light spectrum

Answer 31

red shift

Question 32

This is observed whenever the source of waves is moving relative to an observer.

Answer 32

Doppler effect

Question 33

Rate at which universe is expanding

Answer 33

Hubble constant(Ho)