WorksheetsEM Waves End of Topic Quiz
Total questions: 20
Worksheet time: 10mins
When the wavelength increases the frequency will
increase
decrease
remain same
none of these
Infrared rays are important for
Warming the Earth
Providing visible light for plants
Taking X-rays
all of these
Which of these lists the EM waves from Highest to lowest frequency?
Radio - Micro - Gamma - Visible light - UV - Xrays - Infrared - Xrays
Radio - Micro - Infrared - Visible light - UV - X - Gamma waves
Gamma - Xray - UV - Visible light - Infrared - Micro - radio
none
Radio Waves can travel through the atmosphere
True
False
Radio waves can be communicated around the world because...
they travel through the ionosphere and can be retransmitted by satellites
they reflect from the ionosphere and can be picked up and retransmitted by aerials around the world
they can be sent through fibre optic cables at the speed of 300 million metres per second
they travel in straight lines and can go through the Earth to the other side of the world
What is the speed of light in a vacuum?
3×108 m/s
3×10−8 m/s
6.63×1034 J s
6.63×10−34 J s
What is the wavelength of a microwave transmission at 1,575.42 MHz?
1.9×10−14 m
1.9×10−9 m
0.19 m
1900 m
Microwaves are used for mobile phone and other satellite communication because they are not reflected by the
(a)
Aerials work by..
absorbing electromagnetic waves, which makes electrons move up and down with the same frequency as the wave
absorbing electromagnetic waves, which sends a direct current through the aerial
absorbing sound waves which can be made into electrical signals
absorbing electromagnetic waves, which emits a sound with the same frequency as the wave
Which of these are uses of gamma radiation?
Tanning beds
Radiotherapy
Sterilisation
Medical tracers
Put the following in the order of wavelength, starting with the longest
Ultraviolet, X-rays, gamma rays
X-rays, gamma rays, Ultraviolet
Gamma rays, X-rays, ultraviolet
Ultraviolet, light, infrared
Gamma rays are positively charged.
True
False
