This document contains 15 multiple choice questions about electromagnetic waves and the properties of stars. It tests knowledge of the electromagnetic spectrum, characteristics of different types of electromagnetic waves like x-rays and microwaves, and relationships between wavelength and frequency. The second part focuses on stellar evolution, star classification, and methods for determining properties of stars like temperature, luminosity, and distance.

1. Part 1
Question 1 (Multiple Choice Worth 2 points)
Examine the electromagnetic spectrum below.
What can you conclude about x-rays compared to microwaves?
X-rays have the same frequency as microwaves.
X-rays have a lower frequency than microwaves.
X-rays have a longer wavelength than microwaves.
X-rays have a shorter wavelength than microwaves.
Question 2 (Multiple Choice Worth 2 points)
In the diagram below, what is the property of the wave
indicated by the letter A?
Amplitude
Frequency
Trough
Wavelength
Question 3 (Multiple Choice Worth 2 points)
Which type of electromagnetic radiation is the primary cause of
sunburns?
Radio waves
Ultraviolet rays
Visible waves
Rays
Question 4 (Multiple Choice Worth 2 points)
Which of the following describes the relationship between
frequency and wavelength?
As frequency increases, wavelength increases.

2. As frequency decreases, wavelength decreases.
As frequency increases, wavelength decreases.
As frequency increases, wavelength is unaffected.
Question 5 (Multiple Choice Worth 2 points)
Which of the following types of waves has more energy than an
x-ray?
Gamma rays
Microwaves
Radio waves
Visible light
Question 6 (Multiple Choice Worth 2 points)
Which of the following represents the equilibrium of a wave?
A
B
C
D
Question 7 (Multiple Choice Worth 2 points)
Which of the following is a type of wave that travels at a right
angle relative to the direction of motion?
Amplitude
Longitudinal
Propagated
Transverse
Question 8 (Multiple Choice Worth 2 points)
If a star is located 100 light years from Earth, what can you
conclude about the light from the star?
The light will take 100 years to reach Earth.
The light will take 100 seconds to reach Earth.
The light will take 300,000 years to reach Earth.
The light will travel a total of 300,000 kilometers to reach

3. Earth.
Question 9 (Multiple Choice Worth 2 points)
Which of the following types of electromagnetic radiation has
the longest wavelength?
Radio waves
Ultraviolet waves
Visible light
X-rays
Question 10 (Multiple Choice Worth 2 points)
Examine the diagram of the electromagnetic spectrum below.
If a wave has a wavelength of 1 kilometer, it must be a(n)
gamma ray
Microwave
radio wave
ray
Question 11 (Essay Worth 5 points)
In your own words, explain why longitudinal waves cannot
travel in space.
Question 12 (Essay Worth 5 points)
Suppose you are an astronomer, and a child asks you to explain
the light given off by stars. In your own words, describe the
relationship between the energy, frequency, and wavelength. Be
sure to include information about the electromagnetic spectrum
in your discussion.
Part 2
Question 1 (Multiple Choice Worth 2 points)

4. Given the following blackbody curve graph, what color will Star
A be?
Blue
Red
White
Yellow
Question 2 (Multiple Choice Worth 2 points)
Which of the following processes begins when a star enters the
main sequence?
Nuclear fission
Nuclear fusion
Condensation of a nebula
Appearance of a supernova
Question 3 (Multiple Choice Worth 2 points)
Use the HR diagram below to answer the question.
Which of the following types of stars had a greater initial mass?
Blue main sequence
Orange main sequence
Supernova
White dwarf
Question 4 (Multiple Choice Worth 2 points)
Which of the following is a massive star that has reached the
end of its stellar evolution?
Neutron star
Red giant
Stellar nebula
White dwarf
Question 5 (Multiple Choice Worth 2 points)

5. Which of the following is the most likely end for a star that
formed from a very small nebular cloud?
Black hole
Planetary nebula
Red supergiant
Supernova
Question 6 (Multiple Choice Worth 2 points)
Which of the following characteristics of stars is affected by a
star's temperature?
Brightness
Color
Distance from Earth
Size
Question 7 (Multiple Choice Worth 2 points)
Which of the following classifications of star temperature is
coolest?
O
M
G
A
Question 8 (Multiple Choice Worth 2 points)
Which of the following is an advantage of using parallax rather
than the Doppler effect to determine star distance?
Parallax is easier to use than Doppler shift.
Parallax is more accurate for stars that are very far away.
The Doppler effect can be used only for sounds in space.
Doppler shift indicates only a change in location, not actual
distance.
Question 9 (Multiple Choice Worth 2 points)
Use the HR diagram below to answer the question.

6. Which of the following star types is the brightest?
Red main sequence
Red supergiant
White dwarf
Yellow main sequence
Question 10 (Multiple Choice Worth 2 points)
An astronomer sees two stars in the sky. Both stars are equally
far from Earth, but the first star is brighter than the second star.
Which of the following is a valid conclusion about the first
star?
It is larger than the second star.
It is smaller than the second star.
It is older than the second star.
It is younger than the second star.
Question 11 (Multiple Choice Worth 2 points)
A star is observed moving away from Earth. What can you
conclude about the spectrum of that star?
The spectrum will shift to the blue.
The spectrum will shift to the red.
The spectrum will not change.
The spectrum will shift first to the blue, and then to the red.
Question 12 (Multiple Choice Worth 2 points)
Given the following images, choose the one that most likely
represents a B-class star.
A
B
C
D
Question 13 (Multiple Choice Worth 2 points)
Which of the following types of stars started out on the main

7. sequence with the largest initial mass?
A
B
C
D
Question 14 (Multiple Choice Worth 2 points)
Which of the following is used to calculate the distance to a star
based on subtle shifts in the star's position relative to an
observer on Earth?
Absolute magnitude
Doppler shift
Emissions
Parallax
Question 15 (Multiple Choice Worth 2 points)
Which of the following types of stars is the coolest?
A
B
C
D