Quiz about HR Diagram and Lifecycle of a Star

Question 1

In the diagram given, what happens as we move to the left?

Accepted Answer

Stars get hotter

Answer

Stars Get Larger

Answer

Stars get Colder

Question 2

Which of these stars is hottest?

Accepted Answer

Blue Star

Answer

Red Star

Answer

Yellow Star

Answer

Orange Star

Question 3

Which star is the coldest?

Accepted Answer

Red Star

Answer

Yellow Star

Answer

Orange Star

Answer

Blue Star

Question 4

Compared to the rest of the stars, our sun is considered...

Accepted Answer

Medium size with medium temperature

Answer

Extremely Large and Cold

Answer

Small with a medium temperature

Question 5

Which category is our Sun located in?

Accepted Answer

Main Sequence

Answer

White Dwarfs

Answer

Supergiants

Answer

Giants

Question 6

The category that contains the most stars is...

Accepted Answer

Main Sequence

Answer

Supergiants

Answer

Giants

Question 7

As a whole, Giants are considered hotter than White Dwarfs.

Accepted Answer

False

Answer

True

Question 8

Red stars are the _____________.

Accepted Answer

coolest

Answer

hottest

Answer

biggest

Answer

brightest

Question 9

Blue stars are the _____________.

Accepted Answer

hottest

Answer

coolest

Answer

smallest

Question 10

Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?

Accepted Answer

Barnard's star

Answer

Betelguse

Answer

Sirius B

Answer

Procyon B

Question 11

Which star has the lowest temperature?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 12

Which spectral class does our star, the sun, belong to?

Accepted Answer

G

Answer

M

Answer

K

Answer

F

Question 13

At 10,000 degrees Celsius, hydrogen begins to change into helium and energy is released in a process called

Accepted Answer

nuclear fusion

Answer

supernova

Answer

pulsar

Answer

nuclear fission

Question 14

A small, hot star near the end of its life is a star called a

Accepted Answer

white dwarf

Answer

red dwarf

Answer

supergiant

Answer

protostar

Question 15

As gravity pulls gas and dust into a sphere that becomes denser and hotter, and a sunlike star begins to form, it is called a(n)

Accepted Answer

protostar

Answer

white dwarf

Answer

red dwarf

Answer

supergiant

Question 16

Light Years are a measure of:

Accepted Answer

distance

Answer

time

Answer

speed

Answer

light

Question 17

Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?

Accepted Answer

4.3 years

Answer

1 year

Answer

43 years

Answer

10 trillion years

Question 18

The event that marks the beginning of our known universe

Accepted Answer

Big Bang Theory

Answer

Theory of Evolution

Answer

Cell Theory

Answer

Blackhole theory

Question 19

Energy is created in the core when two _____________ atoms join together to form a ______________ atom.

Accepted Answer

hydrogen, helium

Answer

helium, hydrogen

Answer

carbon, hydrogen

Answer

nitrogen, helium

Question 20

Our sun is an average _____________________________ star

Accepted Answer

main sequence

Answer

white dwarf

Answer

red giant

Answer

supernova

Question 21

A star starts its "life" in a vast cloud of gas called a nebula.
How big is a typical nebula?

Accepted Answer

Bigger than stars, smaller than galaxies

Answer

Smaller than planets

Answer

Bigger than planets, smaller than stars

Answer

Bigger than galaxies

Question 22

The most important thing to know about a star is its...

Accepted Answer

Mass

Answer

Volume

Answer

Temperature

Answer

Age

Question 23

Which of the following stars would you expect to have the highest average temperature?

Accepted Answer

High mass, low volume star

Answer

High mass, high volume star

Answer

Low mass, high volume star

Answer

Low mass, low volume star

Question 24

What element is used as fuel for a Main Sequence Star?

Accepted Answer

Hydrogen

Answer

Helium

Answer

Iron

Answer

Carbon

Question 25

In a very very very very long time, our Sun will run out of fuel and transition into a Red Giant. How will its mass change?

Accepted Answer

The giant star will have the same mass as our sun

Answer

The giant star will have more mass than our sun

Answer

The giant star will have less mass than our sun

Answer

This is the wrong answer.

Question 26

Which of the following stars would you expect to be the hottest?

Accepted Answer

Inner core of red giant

Answer

Protostar

Answer

Main sequence star

Answer

Outer shell of red giant

HR Diagram and Lifecycle of a Star

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