WorksheetsUnit Test C: Electromagnetic Spectrum
Total questions: 12
Worksheet time: 6mins
Light travels in waves. What do we call the distance between two crests or two troughs?
the crest distance
the trough distance
wavelength
frequency
This word means how often something happens (for example, how many waves are created every second)
Hertz
waves
frequency
regularly
This is the part of the Electromagnetic Spectrum that humans can see.
rainbow
visible light
Trick question, we can see everything
Trick question, we can't see any of it
This part of the EM Spectrum is used to create images of our bones.
lasers
microwaves
x-rays
ultraviolet
This part of the EM spectrum has the longest wavelengths, used for communication.
radio waves
microwaves
infrared waves
gamma rays
Humans can't see this type of electromagnetic wave, but we can feel it as heat.
invisible waves
infrared waves
x-rays
ultraviolet waves
True or false: Microwave radiation is used for both cooking food and wifi.
true
false
Sunlight includes this type of harmful radiation that will cause sunburns.
visible light
x-rays
gamma rays
ultraviolet light
This type of light has the most energy and the shortest wavelength. Doctors use them to kill cancer cells!
chemotherapy
starlight
x-rays
gamma rays
Electricity flowing through a filament makes that thin wire so hot that it glows, making light. What is this type of lightbulb called?
glowing bulb
incandescent bulb
LED
fluorescent light
LEDs are a much more efficient source of light because they do not waste much electricity on heat energy. The acronym LED stands for
light-emitting diode
long-eared dog
little electric device
large electricity doodad
When a living organism produces its own light, it is called...
living light
biolight
living things cannot produce light, that's 100% photoshopped
bioluminescence
