Which of these is not an electromagnetic wave?
Ultrasound
Ultraviolet
Infrared
Which of these groups has the highest frequency?
Radio waves
Visible light
Which of these groups has the longest wavelength?
X-rays
Microwaves
Gamma rays
Which electromagnetic wave is used in satellite communication?
Which electromagnetic wave is not used for medical imaging?
Which of these electromagnetic waves is the most damaging to human tissue?
Which word describes the process of giving out radiation?
Emission
Absorption
Transmission
Which colour is the best absorber of radiation?
White
Black
Grey
What happens to the temperature of a body that absorbs and emits infrared radiation at the same rate? - Higher
It decreases
It remains constant
It increases
What gases in the atmosphere change the balance of infrared radiation absorbed and emitted by the Earth? - Higher
Ozone
Radon gas
Greenhouse gases