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GCSE Physics) Stellar Evolution

Total questions: 46

Worksheet time: 3hrs 39mins

Name
Class
Date
1.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
2.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
3.
Compared to the rest of the stars, our sun is considered...
a)
Extremely Large and Cold
b)
Small with a medium temperature
c)
Medium size with medium temperature
4.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
d)
Giants
5.
The category that contains the most stars is...
a)
Main Sequence
b)
Supergiants
c)
Giants
6.
Red stars are the _____________.
a)
hottest
b)
coolest
c)
biggest
d)
brightest
7.
Blue stars are the _____________.
a)
hottest
b)
coolest
c)
smallest
8.
Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?
a)
Betelguse
b)
Sirius B
c)
Procyon B
d)
Barnard's star
9.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
10.
Which spectral class does our star, the sun, belong to?
a)
M
b)
K
c)
G
d)
F
11.
Which one is the correct order from hottest to coolest stars?
a)
blue, yellow,orange, red
b)
red, orange, yellow, blue
c)
blue, red, yellow, orange
d)
yellow, blue, orange, red
12.
The Hertzprung Russell Diagram consists of two axis that are labelled...
a)
Luminosity and Size
b)
Luminosity and Temperature
c)
Size and Age
d)
Mass and Temperature
13.

Which of the following are the brightest?

a)

red supergiants

b)

yellow main sequence

c)

red dwarfs

d)

white dwarfs

14.
Proxima Centauri has a luminosity of less than 1.  What does that mean?
a)
It is brighter than the Sun.
b)
It is hotter than the Sun.
c)
It is dimmer than the Sun.
d)
It is cooler than the Sun.
15.

Which of the following stars is the brightest?

a)

Bellatrix

b)

Deneb

c)

Polaris

d)

Barnard's Star

16.

Which of the following stars is the hottest?

a)

Bellatrix

b)

Deneb

c)

Polaris

d)

Barnard's Star

17.

Where are the coolest stars on an HR Diagram found?

a)

top

b)

bottom

c)

left

d)

right

18.

Match the following spectral classifications to the most likely star colour.

a)

M

1.

Red

b)

O

2.

Blue

c)

A

3.

White

d)

G

4.

Yellow

e)

K

5.

Orange

19.

Reorder the following stages to show the sequence of our Sun's life.

a)

Nebula

b)

Protostar

c)

Main Sequence Star

d)

Red Giant

e)

White Dwarf

1)
2)
3)
4)
5)
20.

Roachsoda is a star with 1.2 times the mass of our Sun. Reorder the following stages to show the sequence of the star's life.

a)

Nebula

b)

Protostar

c)

Main Sequence Star

d)

Red Giant

e)

White Dwarf

1)
2)
3)
4)
5)
21.

Ladybugfizzypop is a star with 12 times the mass of our Sun. Reorder the following stages to show the sequence of the star's life.

a)

Nebula

b)

Main Sequence Star

c)

Red Supergiant

d)

Black Hole

1)
2)
3)
4)
22.

Which of the following stages in a star's life will our Sun experience?

a)

White dwarf

b)

Red supergiant

c)

Black dwarf

d)

Red giant

e)

Black hole

23.

Beetelgeuse is an enormous star, many times larger than our Sun. Which of the stages in a star's life could it experience at some point during its lifetime?

a)

White dwarf

b)

Red supergiant

c)

Black dwarf

d)

Red giant

e)

Black hole

24.

Indicate on the diagram where you would expect to find the white dwarfs.

A
B
25.

Indicate on the diagram where you would expect to find the red giants.

A
B
26.

Indicate on the diagram where you would expect to find the supergiants.

A
B
27.

Indicate on the diagram where you would expect to find the main sequence star.

A
B
C
28.

Reorder the following star colours from coolest to hottest.

a)

Red

b)

Orange

c)

Yellow

d)

White

e)

Blue

1)
2)
3)
4)
5)
29.

What is the name of the cloud that a star is formed in?

a)

Nebula

b)

Supernova

c)

Main Sequence

d)

Dwarf

30.

The heavier a star is, the (a)   time it will spend in the main sequence

31.

When a Red Giant runs out of fuel, it become a:

a)

Supernova

b)

Nebula

c)

White Dwarf

d)

Main Sequence Star

32.

In comparison to other stars in the sky, the Sun appears brighter because it is–

a)

Bigger

b)

Smaller

c)

Nearer

d)

Further

33.
The brightness of a star as seen from Earth is its 
a)
apparent brightness.
b)
absolute brightness.
c)
parallax.
d)
reflective brightness.
34.

As the _________ of a star increases, luminosity increases.

a)

size

b)

distance

c)

age

d)

composition

35.

The luminosity of a star describes its ______________.

a)

brightness

b)

temperature

c)

age

d)

color

36.
The absolute brightness of a star depends on its
a)
distance and temperature.
b)
size and temperature.
c)
color and temperature.
d)
distance and color.
37.
Which property of a star is the brightness of a star at a standard distance?
a)
Apparent (magnitude) brightness
b)
Absolute (magnitude) brightness
c)
Luminosity
d)
Size of the star
38.
Which of the following would be the dimmest star? 
a)
-15
b)
-5
c)
0
d)
25
39.
Which of the following stars would be seen as the brightest star?
a)
Alpheratz, which has an apparent magnitude of 2
b)
Alcyone, which has an apparent magnitude of 3
c)
Deneb, which has an apparent magnitude of 1
d)
Sirius, which has an apparent magnitude of -1
40.

Which star appears the least bright from Earth?

a)

B

b)

A

c)

C

d)

D

41.

Which star is the least bright?

a)

B

b)

A

c)

C

d)

D

42.

Which star is the brightest based on APPARENT magnitude?

a)

Sun

b)

Sirius

c)

Vega

d)

Polaris

43.

What is the brightness of Rigel as seen from Earth?

a)

-1.46

b)

-8.1

c)

0.12

d)

0.85

44.

Which star is the brightest?

a)

Sirius

b)

Alderban

c)

Rigel

d)

Sun

45.

What is the term for the amount of light radiated into space per second by a star?

(a)  

46.

The text below describes the evolution of a star with a mass that is much larger than the mass of the Sun. Complete the gaps using the drop menus.

Hydrogen atoms in a nebula move towards each other due to the force of gravity. As the atoms move towards each other, their ​ (a)   energy store increases, which increases the temperature. If the temperature becomes high enough, nuclear fusion of hydrogen will start and the star enters the ​ (b)   stage of its evolution. When hydrogen fusion stops in the core of the star, the core of the star will start to ​ (c)   . This increases the temperature in a layer surrounding the core. Hydrogen fusion restarts in a layer surrounding the core, causing the star to ​ (d)   and its surface temperature decreases. The star is now a ​ (e)   . Eventually nuclear fusion stops in the core of the star and the star explodes as a supernova.

Choose from the below words
kinetic
main sequence
contract
expand
red supergiant
white dwarf
red giant
black hole
cool
heat up

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