wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Electromagnetic Spectrum, H-R Diagram, Stars & Galaxies

Total questions: 86

Worksheet time: 3hrs 53mins

Name
Class
Date
1.

Which EM waves have the longest wavelength?

a)

radio

b)

x-rays

c)

ultraviolet

d)

gamma rays

2.

Which EM waves have the shortest wavelength?

a)

radio

b)

x-rays

c)

ultraviolet

d)

gamma rays

3.

Which EM waves are invisible? (more than one correct answer)

a)

radio

b)

visible

c)

ultraviolet

d)

gamma rays

4.

Which EM waves are have a SHORTER wavelength than visible?

a)

radio

b)

none

c)

infrared

d)

x-rays

5.

Which EM waves are have the lowest frequency?

a)

radio

b)

none

c)

infrared

d)

x-rays

6.

Which EM waves are have the highest energy & are the most dangerous?

a)

radio

b)

gamma rays

c)

infrared

d)

x-rays

7.

Which color waves have the lowest frequency?

a)

red

b)

yellow

c)

green

d)

violet

8.

Which color waves have the shortest wavelength?

a)

red

b)

yellow

c)

green

d)

violet

9.

What happens to frequency when wavelength decreases?

a)

stays the same

b)

decreases

c)

increases

d)

There is no relationship between wavelength & frequency.

10.

Which type of electromagnetic wave travels fastest through a vacuum?

a)

radio

b)

gamma rays

c)

visible light

d)

They all travel at the same speed.

11.

The diagram shows a person observing a thunderstorm located several kilometers away. The person hears the thunder several seconds after seeing the lightning. Which statement accurately explains the difference in observations of sound and light by the observer?

 

a)

Human eyes see light faster than their ears can hear sound.

b)

The medium the waves are traveling through is different for each type of wave.

c)

Light waves travel faster than sound waves.

d)

Sound waves travel faster than light waves.

12.

Which of the following has the shortest wavelength?

a)

microwaves

b)

UV rays

c)

Infrared

d)

the color blue

13.

Which of the following has the most energy?

a)

Red

b)

Blue

c)

Green

d)

Violet

14.

Which of the following has the most energy?

a)

X-rays

b)

The color green

c)

Microwaves

d)

ultraviolet

15.

Which of the following has the longest wavelength?

a)

Infrared

b)

The color Indigo

c)

gamma rays

d)

TV

16.

Which of the following has the least amount of energy?

a)

UV rays

b)

The color yellow

c)

infrared

d)

Gamma rays

17.

Which of the following has the shortest wavelength?

a)

Gamma rays

b)

The color blue

c)

AM radio

d)

Infrared

18.

Which of the following has the highest frequency?

a)

TV

b)

Microwaves

c)

the color indigo

d)

ultraviolet rays

19.

Which of the following would have the lowest frequency?

a)

infrared

b)

The color red

c)

X-rays

d)

TV

20.

Which of the following has the lowest energy?

a)

The color yellow

b)

The color blue

c)

The color indigo

d)

The color orange

21.

Which of the following has the lowest frequency?

a)

The color blue

b)

The color green

c)

The color yellow

d)

The color violet

22.

Which has a higher frequency?

a)

Wave N

b)

Wave O

c)

Same frequency

d)

There is no frequency

23.

The distance between E and H is called

a)

Crest

b)

Wavelength

c)

Amplitude

d)

Frequency

24.

The electromagnetic spectrum is made up of bands of waves with different _____

a)

Speeds

b)

Frequencies

c)

Reflections

d)

Mediums

25.

The diagram below shows the electromagnetic spectrum. Which letters represent radio and gamma waves?

a)

A F

b)

F C

c)

A G

d)

C G

26.
The higher the frequency the ______ the energy. 
a)
higher
b)
lower
c)
neither, stays the same
27.

The lower the frequency the ______ the energy.

a)

higher

b)

lower

c)

neither, stays the same

28.
Electromagnetic waves that help your body produce vitamin D are called?
a)
ultraviolet rays
b)
x-rays
c)
gamma rays
29.
Which electromagnetic waves help doctors detect broken bones inside your body?
a)
gamma rays
b)
x-rays
c)
ultraviolet rays
30.

Which color has the longest wavelength?

a)

Red

b)

Orange

c)

Yellow

d)

Blue

31.

Which color has the shortest wavelength?

a)

Red

b)

Orange

c)

Yellow

d)

Blue

32.
The blue section of the wave is measuring _________________.
a)
wavelength
b)
crest
c)
trough
d)
amplitude 
33.
What is the first stage of the life cycle of a star for all stars?
a)
nebula
b)
protostar
c)
main-sequence
d)
red giant
34.
This is a young star that glows as gravity brings it together
a)
Nebula
b)
Protostar
c)
Main-sequence star
d)
Red giant
35.
In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.
a)
nebula
b)
protostar
c)
main-sequence
d)
supergiant
36.
Low mass stars expand into what after using up the hydrogen in their core
a)
red giants
b)
supergiants
c)
white dwarfs
d)
protostars
37.
This stage is when a high mass star explodes
a)
Supergiant
b)
Red giant
c)
Supernova
d)
Black hole
38.
When a star's gravitational pull is so strong that not even light can escape, it's called a what?
a)
Black hole
b)
Supernova
c)
White dwarf
d)
Nebula
39.
The most important thing to know about a star is its...
a)
Volume
b)
Mass
c)
Temperature
d)
Age
40.

A stellar nebula is made up of...

a)

clouds of gas

b)

clouds of gas and dust

c)

stars

d)

planets

41.

Our sun is known as a middle-aged, stable star. Also known as a ____________________.

a)

Gas Giant

b)

Nebula

c)

Pulsar

d)

Main Sequence Star

42.
What stage fills in the blank. Nebula --> Main sequence --> red giant --> ______________ --> white dwarf --> black dwaft
a)
supergiant
b)
planetary nebula
c)
black hole
d)
supernova
43.
Which of the following is NOT a final stage of a star. 
a)
black hole
b)
black dwarf
c)
neutron star
d)
red giant
44.

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

45.

Our sun is what kind of star?

a)

Blue giant

b)

Red giant

c)

Main sequence

d)

White dwarf

46.

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

47.

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

48.

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

a)

Red

b)

Yellow

c)

White

d)

Blue

49.

Stars that are brighter are usually...

a)

Hotter

b)

Bigger

c)

More massive

d)

Smaller

50.

Which star has a longer life, a main sequence star or a blue giant?

a)

Main sequence star

b)

Blue giant

51.

Which star is more massive, a blue giant or a red dwarf?

a)

Blue giant

b)

Red dwarf

52.

Which star is more massive, a blue giant or our Sun?

a)

Blue giant

b)

Our Sun

53.

What kind of star has the longest lifespan?

a)

A very massive star, like a blue giant

b)

An average sized star, like our Sun

c)

A star with low mass, like a red dwarf

54.

Which is the correct name of the HR diagram

a)

Hertzsprung-Russell Diagram

b)

Hertzsprung-Randle Diagram

c)

Hurtsdoughnut-Ramstein Diagram

d)

Hertzsprung-Randy diagram

55.

What is this section of stars known as?

a)

Main Sequence

b)

Red Giants

c)

White dwarfs

d)

Blue/Red Supergiants

56.

What percent of stars spend their life as main sequence star ?

a)

90%

b)

85%

c)

80%

d)

50%

e)

95%

57.

Which stage is this?

a)

Red/Blue Supergiants

b)

Main sequence

c)

White dwarfs

d)

Red Giants

58.

Which stage is represented by this picture?

a)

Red Giants

b)

Main Sequence

c)

White Dwarfs

d)

Blue Giants

59.

Which star type is represented by this section of the H-R diagram?

a)

Main Sequence Star

b)

Blue/Red Supergiants

c)

White Dwarfs

d)

Red Dwarfs

60.

The temperature of the star is measured in what?

a)

Fahrenheit

b)

Celcius

c)

Kelvin

d)

Kilometers

e)

Newtons

61.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular 
d)
Irrational
62.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
63.
What type of galaxy has no defined pattern or shape?
a)
Spiral 
b)
Elliptical
c)
Irregular
d)
Constellation
64.
What are galaxies held together by?
a)
Gravitational Attraction
b)
Stars
c)
Other galaxies
d)
Dust and Gas
65.
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
66.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
67.
The type of galaxy that is composed of the older stars and low-mass stars.
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Constellation
68.
The closest star to the sun is the...
a)
Sirius A
b)
Barnard's Star
c)
Luhman16
d)
Proxima Centauri
69.
Place these objects in order from smallest to largest.
a)
Planets, solar system, universe, galaxy
b)
Solar system, planets, galaxy, universe
c)
Planets, solar system, galaxy, universe
d)
Galaxy, solar system, planets, universe
70.
Distance measurement used by astronomers for distant objects.
a)
Kilometers
b)
Light Years
c)
Miles
d)
Light Seconds
71.
How far is the sun from the earth?
a)
4.3 light-minutes
b)
680 light-years
c)
8.4 light-minutes
d)
9 light years
72.
What is 1 Astronomical Unit?
a)
The distance from the center of the earth to the center of the sun.
b)
The distance from the center of Earth to the center of the Moon.
c)
The distance of one entire revolution around the Sun by the Earth.
d)
The distance Light travels in a year.
73.
What is the name of our galaxy? 
a)
Our galaxy is called the Milky Way galaxy 
b)
Our galaxy is called the Andromeda galaxy 
c)
Our galaxy is called the Grand spiral  galaxy. 
d)
Our galaxy is called the Whirlpool galaxy.
74.
Does light travel instantaneously (right away)? 
a)
Light does not travel instantaneously; it takes time for light to travel through the universe. 
b)
Light travels instantaneously; it takes no time for light to travel through the universe. 
75.
How many stars are in a galaxy.
a)
millions or billions
b)
thousands
c)
hundreds
d)
Ten
76.
What are in galaxies?
a)
ice and rock
b)
dust, gas, and stars
c)
stars and ice
d)
water and dust
77.
The Milky Way galaxy is an example of an irregular galaxy
a)
true
b)
false
78.

Most scientists believe the Big Bang Theory explains which of the following questions?

a)

How our planets and moons formed

b)

How our universe began

c)

How the sun turns hydrogen into helium

d)

How fast light travels through space

79.

Which statement is true?

a)

The galaxies are moving toward us.

b)

The galaxies are moving away from us.

c)

The universe remains static or unchanged in motion.

d)

None of the above

80.
How old do scientists think the Universe is?
a)
13.8 billion years old
b)
4.5 billion years old
c)
24,000 years old
d)
5 years old
81.
What does the Big Bang theory suggest?
a)
The universe was just there
b)
The Milky Way is the only solar system
c)
The universe is continually expanding
d)
The universe is collapsing in toward a single point
82.
What were the original two elements in our universe?
a)
Lithium and Carbon
b)
Hydrogen and Neon
c)
Helium and Chlorine
d)
Hydrogen and Helium
83.

The "afterglow" of the energy from the origin of the universe that we see today.

a)

Cosmic microwave radiation

b)

sunlight

c)

Doppler effect

d)

Cosmic explosions

84.

How is the "Big Bang" described?

a)

an explosion

b)

an expansion

c)

a contraction

85.

As galaxies move away from our galaxy

a shift on the electromagnetic spectrum is noticed. This phenomena is

called _____________.

a)

redshift

b)

blueshift

86.
Which of the following is the best description of the Big Bang Theory?
a)
The Big Bang Theory is the prevailing model about the universe’s origin and is supported by observations of the universe’s expansion.
b)
The Big Bang Theory is just one of the ideas about the universe’s origin, many of which are equally respected by the scientific community.
c)
The Big Bang Theory states that pre-existing matter was compacted into a hot and dense form and suddenly exploded into infinite, empty space.
d)
The Big Bang Theory is the scientific explanation of how the Sun, Earth, and the rest of the Solar System were formed at the beginning of time.

Similar Resources on Wayground

Graphing

86 questions

Graphing

quiz

Worksheet

•

6th - 8th Grade

WEDGL

91 questions

WEDGL

quiz

Worksheet

•

8th Grade

Genetics

88 questions

Genetics

quiz

Worksheet

•

7th - 8th Grade

Unit 2 Test Review

85 questions

Unit 2 Test Review

quiz

Worksheet

•

8th - 10th Grade

LATIHAN ASAS IPA KELAS 7 TH 2025/2026

83 questions

LATIHAN ASAS IPA KELAS 7 TH 2025/2026

quiz

Worksheet

•

7th Grade - University

Photosynthesis, Cellular Respiration, Carbon Cycle

82 questions

Photosynthesis, Cellular Respiration, Carbon Cycle

quiz

Worksheet

•

8th Grade

8th Grade - 1st Semester Final Exam

84 questions

8th Grade - 1st Semester Final Exam

quiz

Worksheet

•

8th Grade

Earth-Sun-Moon System Test Review Quizizz

84 questions

Earth-Sun-Moon System Test Review Quizizz

quiz

Worksheet

•

8th Grade