WorksheetsProperties of Electromagnetic Waves
Total questions: 15
Worksheet time: 37mins
Which statement best describes how electromagnetic waves move through space?
They require a solid medium to travel
They need air as their only medium
They can travel through a vacuum without a medium
They stop completely in empty space
What are photons?
Bundles of mass moving through air
Massless bundles of energy
Large pieces of matter
Ripples requiring a medium
Look at the diagram showing radio waves through gamma rays. Which part of the spectrum has the longest wavelength and lowest energy?
Ultraviolet waves near the sun icon
Gamma rays beside the radiation sign
Microwaves next to the Wi‑Fi symbol
Visible light shown as a rainbow
In the spectrum diagram, wavelength decreases from left to right. What happens to frequency as you move from radio waves to gamma rays?
Frequency decreases to the lowest values
Frequency changes randomly without a pattern
Frequency increases to higher values
Frequency stays the same across the spectrum
A student claims X‑rays have lower energy than infrared because their waves look tighter. Using the diagram’s relationships, how should you evaluate this claim?
Incorrect, energy is unrelated to wavelength
Correct, infrared absorbs energy from visible light
Incorrect, shorter wavelength means higher energy
Correct, tighter waves mean less energy overall
Which electromagnetic wave has the longest wavelength and lowest frequency, commonly used by Bluetooth, Wi‑Fi, and cell phones?
Infrared waves used in night vision
Radio waves used in wireless communication
Ultraviolet waves used for sterilization
Microwaves used in GPS navigation
Which application relies on gamma rays?
x ray imaging
Cancer treatments that kill of cancer cells
GPS mapping city streets
Bluetooth phone connections
Which electromagnetic wave is most suitable for taking images of bones while minimizing exposure time risks?
Visible light from rainbow colors
Ultraviolet used for vitamin D
X-rays that penetrate soft tissue
Gamma rays from nuclear reactions
Which statement best describes a property or use of gamma rays ?
They have smallest wavelength and highest frequency
They are safe for skin and reduce cancer risk
They are used to heat food in household ovens
They reflect off clouds to create visible rainbows
Red light has a wavelength of about 6.2 x 10⁻⁷ meters. What is its frequency?
v = λf
Blue light has a frequency of 6.70×10^14 hertz. Find the wavelength.
v= λf
a heat lamp uses what kind of electromagnetic wave
Which part of the electromagnetic spectrum moves the fastest?
radio waves
they all move the same speed
visible light
gamma rays
What color has the shortest wavelength?
Which part of the electromagnetic spectrum is not characterized by causing cancer?
