Sci10 Stars, Galaxies, and the Universe

Question 1

A violent, bright explosion in which a star loses most of its mass is known as a

Accepted Answer

supernova

Question 2

The closest star NOT in our solar system is:

Accepted Answer

Proxima centauri

Question 3

According the the Big Bang Theory, the universe is approximately ___________________.

Accepted Answer

13.7 billion years old

Question 4

Matter not visible, but detected through gravitational interactions between galaxies is

Accepted Answer

dark matter

Question 5

Which of the following is NOT one of the three main shapes of galaxies?

Accepted Answer

circular

Question 6

This scientist created a mathematical theory for why the planets orbit the sun.

Accepted Answer

Sir Isaac Newton

Question 7

How many crew are on the International Space Station.

Accepted Answer

3-6

Question 8

Stars begin their life as a __________________.

Accepted Answer

nebula

Question 9

The accelerating speed that the universe is moving apart can be explained by:

Accepted Answer

Dark energy

Question 10

An object that orbits the sun. Forms a tail when ice melts. Made of ice and dust.

Accepted Answer

Comet

Question 11

Our next closest GALAXY

Accepted Answer

Andromeda

Question 12

A star's surface temperature can be estimated based on its ________________.

Accepted Answer

color

Question 13

Black holes form as the result of

Accepted Answer

the death of a giant star

Question 14

What is the fastest objects can move in our universe according to the laws of physics?

Accepted Answer

3.0 x 108 m/s, Speed of light

Question 15

Where are most of the asteroids in our galaxy found?

Accepted Answer

Between Mars and Jupiter

Question 16

A light-year measures __________________.

Accepted Answer

distance

Question 17

Our galaxy is classified as a(n) ____________ galaxy.

Accepted Answer

spiral

Question 18

Which of the following is evidence for the Big Bang Theory?

Accepted Answer

All of the above

Questions 18