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Properties of Stars

Total questions: 40

Worksheet time: 3600secs

Name
Class
Date
1.

Which color are the hottest stars?

a)

blue

b)

orange

c)

red

d)

yellow

2.

Which property of a star is closely related to its temperature?

a)

brightness

b)

color

c)

composition

d)

size

3.

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

a)

Bigger

b)

Smaller

c)

Nearer

d)

Further

4.
Put the stars in order from coolest to hottest.
a)
Blue, White, Yellow, Orange, Red
b)
Red, Orange, Yellow, White, Blue
c)
Red, Orange, Yellow, Blue, White
d)
Red, Yellow, Orange, White, Blue
5.
What color of star is the coolest?
a)
Red
b)
Yellow
c)
Blue
d)
White
6.

The chart below displays the names of different stars and their colors. Which of the groups below best orders the stars from hottest to coolest?

a)

A. Antares, Spica, Sun, Aldebaran

b)

B. Sun, Spica, Antares, Aldebaran

c)

C. Spica, Sun, Aldebaran, Antares

d)

D. Antares, Aldebaran, Sun, Spica

7.
The brightness of a star as seen from Earth is its 
a)

apparent magnitude

b)
absolute brightness.
c)
parallax.
d)
reflective brightness.
8.

____________are areas of gas on the sun that are cooler than the gas around them.

a)

Solar Wind

b)

Solar Flares

c)

Sunspots

d)

Core

9.
What is an explosion on the sun that gives out huge amounts of energy?
a)
Sun Spot
b)
Solar Flare
c)
Sun Ray
d)
Sun Gases
10.
What is the sun made out of?
a)
fire and lava
b)
gases
c)
magma
d)
flames
11.

One physical property of a star is apparent magnitude. Which of the following is used in determining the apparent magnitude of a star?

a)

the constellation the star is in

b)

the distance the star is from Earth

c)

the number of times the star rotates

d)

the number of prominences the star makes

12.

One physical property of a star is absolute brightness. Which of the following is used in determining the absolute brightness of a star?

a)

how bright the star actually is

b)

how bright the star appears to be from the Earth

c)

the number of prominences the star makes

d)

the direction the star rotates

13.
Why do other stars appear so much smaller than the sun?
a)
They are much smaller
b)
They are so far away
c)
They are not as bright
d)
They are dwarf stars
14.

Stars that are very bright, large & burn at the highest temperature

a)

Blue Giant stars

b)

Red Giant

c)

White dwarves

d)

Proton stars

15.

Which star is the coldest?

a)

Yellow Star

b)

Red Star

c)

Orange Star

d)

Blue Star

16.
As you move from the bottom to the top of the H R diagram the __________ changes.
a)
Temperature
b)
Luminosity or Brightness
17.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
18.

What is the Hertzsprung-Russel Diagram?

a)

A map which tells the approximate location of stars in the Milky Way galaxy and their distance from Earth.

b)

A table that alphabetically lists stars by name and includes dates of when the star was first charted.

c)

A chart which organizes stars into categories based on the amount of Hydrogen they burn.

d)

A graph used to classify stars according to their luminosity, color, temperature, and stage.

19.

Which category is our Sun located in?

a)

White Dwarfs

b)

Supergiants

c)

Main Sequence

d)

Giants

20.

What number on the diagram represents the convection zone in a star?

a)

9

b)

4

c)

3

d)

2

21.
The middle of the Sun is called the
a)
Corona
b)
Photosphere
c)
Core
d)
Convection Zone
22.

What is this

a)

Prominence

b)

Sunspot

c)

Core

d)

Solar Flare

23.
When we look at the sun, what layer are we viewing?
a)
photosphere
b)
chromosphere
c)
corona
d)
convection zone
24.
a brief burst of energy from the sun’s photosphere
a)
corona
b)
solar flare
c)
solar wind
d)
photosphere
25.

Which of the following correctly describes the rotation of the Sun?

a)

All parts of the Sun rotate together.

b)

The Sun rotates faster at its equator than at its pole.

c)

The Sun rotates slower at its equator than at its pole.

d)

The Sun does not rotate at all.

26.

The H-R diagram classifies stars based on what factors?

a)

Temperature and luminosity

b)

Number of planets

c)

What constellation they're in

d)

Temperature and fusion

27.

Compared to a red giant star, a blue supergiant is...

a)

Hotter and brighter

b)

Hotter and not as bright

c)

Colder and brighter

d)

Colder and not as bright

28.

Compared to a white dwarf, a red supergiant is...

a)

Hotter and brighter

b)

Hotter and not as bright

c)

Colder and brighter

d)

Colder and not as bright

29.

Our sun is yellow. A star colder than our sun would be...

a)

Red

b)

Yellow

c)

White

d)

Blue

30.

Stars that are brighter are usually...

a)

Hotter

b)

Bigger

c)

More massive

d)

Smaller

31.
Label part 6
a)
#6 Prominences
b)
#6 Corona
c)
#6 Sunspots
d)
#6 Photosphere
32.
Label part 5
a)
#5 Chromosphere
b)
#5 Radiation zone
c)
#5 Convection zone
d)
#5 Photosphere
33.
Label Part 3
a)
#3 Chromosphere
b)
#3 Radiation zone
c)
#3 Convection zone
d)
#3 Photosphere
34.
Label Part 2
a)
#2 Core
b)

#2 Radiative zone

c)
#2 Convection zone
d)
#2 Corona
35.

Alpha Centauri A is a star that is larger than the Sun, yet it appears much less bright. Which of the following is the best explanation for this?

a)

The difference in brightness is due to the distance of the Sun and Alpha Centauri A from Earth

b)

The smaller a star the brighter it appears

c)

The older the star the brighter it appears

d)

The larger the star always appears to be brighter

36.
What is magnitude?
a)
the process inside a star that produces the star's energy
b)
term used by scientists to describe a star's brightness
c)
star groupings in space
d)
the process inside a star that produces the star's energy
37.
A student notices that the moon looks larger than the stars.  Why?
a)
The moon is reflecting light from the sun
b)

The moon is closer to Earth than the stars

c)
The moon is much larger than the stars
d)
The moon is much larger than Earth
38.

During science class, Ava and Justin were discussing the speed of the Sun’s rotation, and debating over which model would best illustrate the different speeds in each zone. As they were reviewing the different models, they noticed that the more arrow heads in a region showed a greater speed. Which model below best represents how the Sun's rotational pattern?

a)
b)
c)
d)
39.

Look at the diagram. Which of the following statements accurately describes one of the stars in the HR diagram?

a)

Star A is the brightest star.

b)

Star B is a red star.

c)

Star C is the dimmest star.

d)

Star D is the hottest star.

40.

Look at the diagram. Which solar property is represented at number nine?

a)

core

b)

flare

c)

sunspot

d)

prominence

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