The Universe (vocab terms)

Question 1

an explosion that pushed matter into space and enabled stars to form

Answer 1

Big Bang

Question 2

a group of stars, gas, and dust. There are millions of (blanks) in our Universe.

Answer 2

A galaxy

Question 3

How many stars are in the Milky way galaxy?

Answer 3

Over 200 billion!

Question 4

Galaxies have different shapes.
What type of shape is the Milky way galaxy?

Answer 4

A spiral

Question 5

when atoms collide together and release incredible amounts of energy

Answer 5

Fusion

Question 6

most widely accepted theory for forming our Universe

Answer 6

The Big Bang theory

Question 7

• Has several layers- visible layers are the photosphere, chromosphere, and corona
• Nuclear fusion occurs in the interior (center) of the (blank)
• Biggest object in the universe

Answer 7

The sun

Question 8

includes: the Sun, 8 planets and other objects (moons, asteroids, comets, meteors)

Answer 8

Solar System

Question 9

(blank) holds the planets in their orbits around the sun

Answer 9

Gravity

Question 10

are the very beginnings of planets as they form
Stars are made of hydrogen and helium.

Answer 10

Planetesimals

Question 11

are born when nuclear fusion begins (small atoms combine to form larger ones) and lots of energy is given off as a result.

Answer 11

Stars