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Unit 5: The Universe

Total questions: 52

Worksheet time: 32mins

Name
Class
Date
1.

How bright a star appears from Earth

a)

Apparent Magnitude

b)

Absolute magnitude

2.

How bright stars actually are

a)

apparent magnitude

b)

absolute magnitude

3.
What word best describes our sun?
a)
Average
b)
Supergiant
c)
Dwarf
d)
Red Giant
4.
What color of star is the hottest?
a)
Blue
b)
Red
c)
Yellow
d)
Orange
5.
What color of star is the coolest?
a)
Red
b)
Yellow
c)
Blue
d)
White
6.
What is the name of the largest stars?
a)
Protostars
b)
Supergiants
c)
Red Giants
d)
Dwarf Stars
7.
What is the name of the explosion at the death of a massive star?
a)
Supergiant
b)
Supernova
c)
Black Hole
d)
Nebula
8.
What is the name of the gas/dust clouds that form stars?
a)
Nebulas
b)
Protostars 
c)
Supernova
d)
Neutron Star
9.
Most stars are made of which elements?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
10.
A small, hot star near the end of its life is a star called a
a)
white dwarf
b)
red dwarf
c)
supergiant
d)
protostar
11.

Our sun is currently in what star stage?

a)

Protostar

b)

Nebula

c)

Main Sequence

d)

Red Giant

12.
After the main sequence, a low mass star becomes a
a)
black dwarf
b)
protostar
c)
red giant
d)
supergiant
13.

Felix examined several photos of stars. To compare their temperatures, he looked at the colors of the stars. He organized the photos in order from coolest to hottest. Which of these answers shows the correct order?

a)

red, yellow, white, blue

b)

white, blue, yellow, red

c)

yellow, white, blue, red

d)

blue, yellow, white, red

14.
Which of the following is NOT a characteristic used to classify stars?
a)
Color
b)
Temperature
c)
Size
d)
Shape
15.
True or False
The Sun is the biggest star in the sky.
a)
True
b)
False
16.
A black hole is an object so dense with so much gravity that even ________ cannot escape.
a)
gravity
b)
galaxies
c)
spaceships
d)
light
17.

What will be the next stage in our star the sun's life cycle?

a)

supernova

b)

white dwarf

c)

blackhole

d)

red giant

18.
All stars begin their life in a
a)
Main Sequence
b)
Nebula
c)
Protostar
d)
Black Dwarf
19.
The H-R diagram is a graph that shows the relationship between ______________ for stars. 
a)
temperature and color
b)
temperature and brightness
c)
brightness and color
d)
distance and brightness
20.
What color of star is the coolest?
a)
Red
b)
Yellow
c)
Blue
d)
White
21.
What color of star is the hottest?
a)
Blue
b)
Red
c)
Yellow
d)
Orange
22.

Our solar system is located in which galaxy?

a)

Andromeda

b)

Milky Way

c)

Proxima X

d)

Triangulum

23.

What are 90% of stars classified as on the H-R diagram?

a)

Supergiants

b)

White Dwarfs

c)

Main Sequence

d)

Giants

24.

On the H-R diagram, it compares a star's brightness to its

a)

Temperature

b)

Composition

c)

Age

25.

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

a)

Stars get larger

b)

Stars get colder

c)

Stars get hotter

d)

Stars get sillier

26.

True or False: Red Giants are considered hotter than White Dwarfs.

a)

True

b)

False

27.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
28.

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

a)

M

b)

K

c)

G

d)

B

29.

What determines the color of a star?

a)

Its size

b)

Its temperature

c)

Its composition

d)

They are all the same color

30.

A cloud of gas and dust

a)

nebula

b)

protostar

c)

supernova

d)

white dwarf

31.

a collection of dust and

gas that forms stars or

results from dying stars

a)

nebula

b)

supernova

32.

the collapse of a massive

star's core resulting in an

explosion

a)

nebula

b)

supernova

33.

A supergiant begins its life cycle in the nebula as a high-mass star before becoming a supergiant. It then

explodes in a supernova due to its increase in mass and loss of pressure.

a)

True

b)

False

34.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular 
d)
Irrational
35.
What type of galaxy has no defined pattern or shape?
a)
Spiral 
b)
Elliptical
c)
Irregular
d)
Constellation
36.
What are in galaxies?
a)
ice and rock
b)
dust, gas, and stars
c)
stars and ice
d)
water and dust
37.
What type of galaxy has no defined pattern or shape?
a)
Spiral 
b)
Elliptical
c)
Irregular
d)
Constellation
38.
What are the the 3 types of galaxies?
a)
Spiral Galaxies, Regular Galaxies, and Lliptical Galaxies
b)
Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies
c)
 Milky Way, Elliptical Galaxies, and Spiral Galaxies
d)
Milky Way, Elliptical Galaxies, and Irregular Galaxies
39.
A galaxy is a large collection of stars, gas and dust. What is responsible for holding the stars, gas, and dust together in a galaxy?
a)
heat
b)
light
c)
gravity
d)
friction
40.

The color of a star indicated its

a)

speed

b)

volume

c)

distance

d)

temperature

41.

What feature is used to classify galaxies?

a)

size

b)

shape

c)

color

d)

brightness

42.

Scientist believe that the universe is expanding because of a phenomena known as

a)

black holes

b)

red shift

c)

blue shift

d)

radioactivity

43.

What is the force that holds a galaxy together?

a)

heat

b)

dark energy

c)

light

d)

gravity

44.

Which galaxy do we live in?

a)

Andromeda

b)

Milky Way

c)

Small Magellanic Cloud

d)

Virgo

45.

Characteristics used to classify stars include:

a)

distance, size, and color.

b)

size, distance, and brightness.

c)

color, brightness, and distance.

d)

size, brightness, and temperature.

46.

What two elements mostly make up stars?

a)

Hydrogen and Oxygen

b)

Hydrogen and Helium

c)

Helium and Oxygen

d)

Hydrogen and Nitrogen

47.

What is an interstellar cloud of dust and gases where stars can form?

a)

universe

b)

solar system

c)

galaxy

d)

nebula

48.

Which of the following statements best describes a galaxy?

a)

A system of planets with an elliptical orbit

b)

A giant nuclear reactor held together by gravity

c)

A cloud that produces stars

d)

A system of gas, dust and billions of stars held together by gravity

49.

The path that the earth revolves in is due to-

a)

the gravitational attraction between the earth and the moon

b)

the gravitational attraction between the sun and the moon

c)

the gravitational attraction between the sun and the earth

d)

the rotation of the earth

50.

What type of electromagnetic radiation has the highest frequency?

a)

Radio Waves

b)

Gamma Rays

c)

Infra Red

d)

Microwaves

51.

What spectral class do the hottest stars belong in?

a)

B

b)

F

c)

M

d)

O

52.

Name the stars located in area A.

a)

main sequence

b)

super giants

c)

white dwarfs

d)

giants

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