ChatGPT Practice Test

Question 1

What is the smallest type of star by size?

Answer 1

Neutron Star

Question 2

What color represents the hottest stars?

Answer 2

Blue/Violet

Question 3

Which star type has the greatest brightness and mass?

Answer 3

Hypergiants

Question 4

What is the surface temperature of a red star approximately?

Answer 4

2000°C

Question 5

Which star type is very hot but dim?

Answer 5

White dwarf

Question 6

What does the H-R diagram plot on the Y-axis?

Answer 6

Luminosity

Question 7

What stage comes directly after a nebula in stellar evolution?

Answer 7

Protostar

Question 8

Which process powers main sequence stars?

Answer 8

Nuclear fusion

Question 9

What do low-mass stars like the Sun become after a red giant phase?

Answer 9

White dwarf

Question 10

What causes a red giant to form?

Answer 10

Fusion of helium into carbon

Question 11

What is the final fate of a high-mass star after a supernova, if it has enough mass?

Answer 11

Black hole

Question 12

What is a neutron star mostly made of?

Answer 12

Neutrons

Question 13

Which star property is measured by apparent magnitude?

Answer 13

Brightness as seen from Earth

Question 14

What causes a star’s brightness to appear dimmer from Earth?

Answer 14

Distance

Question 15

What does a main sequence star need in its core to begin fusion?

Answer 15

High temperature and pressure

Question 16

Where are most stars found on the H-R diagram?

Answer 16

Diagonal band called the Main Sequence

Question 17

Which of the following represents the correct temperature color order from coolest to hottest?

Answer 17

Red, orange, yellow, white, blue/violet

Question 18

What happens when a massive star tries to fuse iron?

Answer 18

Fusion stops and the core collapses

Question 19

What is luminosity also known as?

Answer 19

Absolute magnitude

Question 20

Which two things are needed to calculate a star’s luminosity?

Answer 20

Distance and brightness