Year 9 Earth and Space Science - Stars

Question 1

The black holes can be detected by (two options)

Accepted Answer

Gravitational lensing, X-ray signals produced by another star

Question 2

What happens to the force of gravity as the distance between the two objects increase?

Accepted Answer

Becomes weaker

Question 3

Galaxies are a result of

Accepted Answer

The strong gravitational attraction

Question 4

If the value of the magnitude of a star is greater, it means is greater, it means the star is

Accepted Answer

dimmer

Question 5

This image indicates that you have found...

Accepted Answer

A black hole

Question 6

Our sun is currently at the stage of "red giant"

Accepted Answer

false

Question 7

What is Nebula? (two correct answers)

Accepted Answer

The birthplace of stars, Huge clouds of interstellar gas

Question 8

What does light year mean?

Accepted Answer

The distance of light travels in one year

Question 9

This is a...

Accepted Answer

Nebula

Question 10

What is the name of the type of nuclear reaction that produces energy in stars?

Accepted Answer

Nuclear fusion

Question 11

Gravitational lensing is based on Einstein's theory of relativity.

Accepted Answer

True

Question 12

Why are kilometers not a convenient unit of length in astronomy?

Accepted Answer

The distance between stars is huge

Question 13

The outward force of radiation causes the materials within the star to fall to its center.

Accepted Answer

False

Question 14

What shapes a star? (Two options)

Accepted Answer

The inward force of gravity, the outward force of radiation pressure

Question 15

The unit light-year is based on the phenomenon called Parallax

Accepted Answer

False

Question 16

Are there any differences between absolute magnitude and apparent magnitude?

Accepted Answer

Yes

Questions 16