WorksheetsUses of the Electromagnetic Spectrum
Total questions: 10
Worksheet time: 10mins
Fill in the blank:
gamma rays, x-rays, (a) , visible light, infrared, microwaves, radio waves
Which of the listed waves has the highest frequency?
infrared
radio waves
ultraviolet
x-rays
Which of the listed waves has the longest wavelength?
infrared
radio waves
ultraviolet
x-rays
Which of these are NOT uses of microwaves?
optical fibres
satellite communication
thermal imaging
cooking food
Gamma rays are used to sterilise food because they transfer a lot of (a) .
Which of these waves can be used for cooking?
microwaves
infrared
visible light
ultraviolet
Infrared radiation is used in optical fibres. Optical fibres work using
reflection
refraction
scattering
total internal reflection
Microwaves are used to cook food. The energy from the microwaves are absorbed by (a) molecules in the food.
To detect faked bank notes, (a) light is shone onto the note. That light is absorbed by the ink on the note and re-emitted as visible light.
Explain how x-rays are used to detect broken bones.
