Light, Infrared, Microwaves And Radio Waves Flashcards
1
Q
All Objects Emit ____________ Radiation.
A
Infrared.
2
Q
The Hotter an Object is, the More Infrared Radiation it ______.
A
Emits.
3
Q
Infrared Radiation is Absorbed by your _______.
A
Skin.
4
Q
Optical Fibres in Communication Systems Usually Use Infrared Radiation Instead of ___________ Light.
A
Visible.
5
Q
Infrared Radiation is Used to Heat Up Objects Quickly:
A
- Electric Heaters that Emit Infrared Radiation Warm Rooms Quickly.
- Electric Cookers that Have Halogen Hobs Heat Up Food Faster than Ordinary Hobs.
6
Q
Microwaves have a Shorter Wavelength than _________ Waves.
A
Radio.
7
Q
White Light Contains All the Colours of the Visible ___________.
A
Spectrum.
