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Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Electromagnetic Waves 
Ans: An_________________________consists of vibrating electric and 
magnetic fields that move through space at the speec of light. 
 
Electromagnetic Radiation 
Ans: The energy transferred through space by electromagnetic waves is 
called___________________________________. 
 
Medium 
Ans: Electromagnetic waves can transfer energy without 
a____________________. 
 
The Speed of Light 
2 | Page 
 
Ans: All electromagnetic waves travel at the same spee...
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Wave 
Ans: A disturbance that transfers energy through matter or space. 
 
Crest 
Ans: Highest point of a wave 
 
Trough 
Ans: Lowest point of a wave 
 
Amplitude 
Ans: The height of a wave 
 
What is the relationship between a wave's amplitude and the 
amount of energy it carries?
Exam (elaborations)
Electromagnetic waves Questions and Correct Answers/ Latest Update / Already Graded
electromagnetic wave 
Ans: a disturbance that transfers energy through a field 
 
radiation 
Ans: energy that moves in the form of EM waves 
 
electromagnetic spectrum 
Ans: the range of all EM frequencies is known 
 
radio waves 
Ans: EM waves that have the longest wavelengths, the lowest 
frequencies, and the lowest energies 
 
microwaves 
2 | Page 
 
Ans: EM waves with shorter wavelengths, higher frequencies, and higher 
energy than other radio waves 
 
visible li...
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Reflection 
Ans: when a wave bounces off of a surface 
 
Refraction 
Ans: the change in direction of a wave when it changes speed as it 
travels from one material(medium) to another 
 
Diffraction 
Ans: the bending of waves around a barrier or through an opening 
 
Interference 
Ans: when waves overlap 
 
electromagnetic spectrum
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Electromagnetic Wave 
Ans: transverse waves consisting of a repeating pattern of changing 
electric and magnetic forces 
 
Radio Wave 
Ans: Electromagnetic waves with the longest wavelengths and lowest 
frequencies 
 
Visible Light 
Ans: Electromagnetic radiation that can be seen with the unaided eye 
 
Gamma Rays
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Which have higher frequencies? FM or AM? 
Ans: FM 
 
Which produce better sound quality? FM or AM? 
Ans: FM 
 
What does GPS stand for? 
Ans: Global Positioning System 
 
Who can pick up GPS signals? 
Ans: Anybody with a GPS receiver 
 
What does amplitude modulation mean?
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Global Positioning Systems tell you 
Ans: your exact location on Earth 
 
Waves that have electrical properties and some magnetic 
properties 
Ans: electromagnetic waves 
 
Electromagnetic waves can transfer energy without a(n) 
Ans: medium 
 
In a vacuum, all electromagnetic waves have the same 
Ans: speed
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Electromagnetic waves can also be called 
Ans: Light Waves 
 
The transfer of energy by electromagnetic waves. 
Ans: Radiation 
 
Electromagnetic waves do not need a _________ to travel through. 
Ans: Medium 
 
Electromagnetic waves travel through 
Ans: Space 
 
Electromagnetic waves have to slow down when they have to travel 
through a _________. 
2 | Page 
 
Ans: Medium 
 
Electromagnetic waves are _______ waves. 
Ans: Transverse 
 
Transverse waves travel at a...
Exam (elaborations)
Electromagnetic waves Questions and Correct Answers/ Latest Update / Already Graded
2 examples of radio waves 
Ans: Broadcasting radio (am/fm) and tv 
 
2 examples of microwaves 
Ans: RADAR, cell phones 
 
2 examples of Infrared waves 
Ans: Heat lamps, heat-sensing cameras 
 
2 examples of visible light 
Ans: seeing light and rainbow colors 
 
2 examples of ultraviolet waves
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Which electromagnetic wave has the lowest frequency (largest 
wavelength)? 
Ans: Radio waves. 
 
Which electromagnetic wave has the highest frequency (smallest 
wavelength)? 
Ans: Gamma rays/waves. 
 
Which is the only electromagnetic wave that we can see with our 
eyes? 
Ans: visible light waves 
 
Which electromagnetic wave helps us cook food by heating the 
water in the food?
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Which are electromagnetic waves? Check all that apply. 
earthquake waves 
infrared waves 
ocean waves 
radio waves 
ultraviolet waves 
Ans: infrared waves 
radio waves 
ultraviolet waves 
 
Explain how electromagnetic waves are produced 
2 | Page 
 
Ans: Sample Response: The source of electromagnetic waves are 
charged particles that begin to oscillate when acted upon by a 
disturbance. These oscillating particles create an oscillating magnetic 
field. The oscillating magneti...
Exam (elaborations)
Electromagnetic waves Questions and Correct Answers/ Latest Update / Already Graded
Radiant Energy 
Ans: Energy carried by electromagnetic waves 
 
Carrier Wave 
Ans: Frequency of electromagnetic waves that a radio station is assigned 
 
Ultraviolet Waves 
Ans: Waves with wavelengths shorter than visible light that are used to kill 
bacteria 
 
Gamma Rays 
Ans: Highest energy electromagnetic radiation 
 
Electromagnetic Waves
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Amplitude 
Ans: the height of a wave from the origin to a crest, or from the origin to a 
trough. 
 
Cell Phones 
Ans: use microwaves 
 
Electromagnetic Waves 
Ans: a form of energy that can travel through space 
 
When EM waves strike a surface they can do one of three things. 
Ans: reflected; refracted; absorbed 
 
Frequency
Exam (elaborations)
Electromagnetic Waves Questions and Correct Answers/ Latest Update / Already Graded
Waves 
Ans: carry energy from place to place 
 
Crest 
Ans: Top of a transverse wave 
 
Trough 
Ans: Bottom of a transverse wave 
 
Transverse Wave 
Ans: Carries energy at a right angle or perpendicular to the direction of 
the energy flow 
 
Longitudinal Wave
Exam (elaborations)
ELECTROMAGNETIC WAVES Questions and Correct Answers/ Latest Update / Already Graded
These waves consist of oscillating electric and magnetic fields. They 
waves include radio waves, microwaves, infrared radiation, visible 
light, ultraviolet radiation, X-rays, and gamma rays. They are 
distinguished by their different frequencies and wavelengths. In 
visible light, these differences account for different colors. 
Wavelengths can range from hundreds of kilometers (radio waves) 
to less than the size of an atom (gamma rays). Because of these 
differences, various types of ...
Exam (elaborations)
Electromagnetic waves Questions and Correct Answers/ Latest Update / Already Graded
electromagnetic waves 
Ans: this wave transfers electrical and magnetic energies. the wave is a 
vibrating electric field and a vibrating magnetic field. it is a transverse 
wave 
 
polarized light 
Ans: light that results after waves travel through a polarized filter. the 
waves vibrate in one plane 
 
photoelectric effect 
Ans: photons of light hit certain metals causing the electrons to move. 
 
electromanetic radiation
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Electromagnetic Waves Bundled Exams Questions and Answers Latest Versions (2024/2025) (Complete and Accurate)
Electromagnetic Waves Bundled Exams Questions and Answers Latest Versions (2024/2025) (Complete and Accurate)
Exam (elaborations)
Electromagnetic Waves Questions and Answers with Certified Solutions
Electromagnetic Waves Questions and 
Answers with Certified Solutions 
 
How do polarized sunglasses reduce glare? 
 They block horizontally polarized light reflected off surfaces. 
 
Why is ultraviolet light harmful to the skin? 
 It can damage DNA and cause skin cancer. 
 
What is the significance of Planck's constant in electromagnetic waves? 
 It relates the energy of a photon to its frequency. 
 
Why are X-rays used in security scanners? 
 They penetrate materials and reveal objects insi...
Exam (elaborations)
Electromagnetic Waves Questions and Answers Latest Update Graded A+
Electromagnetic Waves Questions and 
Answers Latest Update Graded A+ 
 
How are electromagnetic waves related to electric charges? 
 Electromagnetic waves are generated when electric charges accelerate, creating oscillating 
electric and magnetic fields. 
 
Why can't humans see most electromagnetic waves? 
 Humans can only see a small range of electromagnetic waves known as visible light because 
our eyes are sensitive only to that wavelength range. 
 
What is radio wave propagation? 
 Radio ...
Exam (elaborations)
Electromagnetic Waves Questions and Answers Graded A+
Electromagnetic Waves Questions and 
 
Answers Graded A+ 
 
How do electromagnetic waves contribute to the Earth's energy balance? 
 Electromagnetic waves from the Sun provide energy to the Earth, which is absorbed, 
reflected, and emitted as infrared radiation, maintaining the planet's temperature balance. 
 
Why do radio waves travel long distances compared to other electromagnetic waves? 
 Radio waves have longer wavelengths that can diffract around obstacles and reflect off the 
ionosp...