WorksheetsProperties of Electromagnetic Waves
Total questions: 15
Worksheet time: 8mins
Which of the following are true of electromagnetic waves?
They all travel at the same speed
They need a medium to travel
Only a small portion of them are visible to humans
They all carry the same amount of energy
Gamma rays are the highest frequency electromagnetic waves. Which are true about Gamma rays.
They are used in 5G cellphone communication
They are more dangerous to humans than UV rays
They have a smaller wavelength than visible light
Gamma rays carry less energy than radio waves
Electromagnetic waves are produced when a charged particle accelerates. This creates a "ripple" or wave in the _________ ________.
gravitational field
quantum realm
space-time continuum
electric field
Which range of electromagnetic waves have the longest wavelength?
Gamma Ray
Visible
Microwave
Radio
The image shows the tendency of a wave to spread out when passing through a narrow gap. This effect is called...
diffraction
polarization
transmission
absorption
When white light is diffracted we see a rainbow. Why is this?
The wavelengths become shorter as they get diffracted
Different wavelengths are diffracted at different angles
The white light is absorbed and the different colors are emitted
What happens after an electron has been excited into a high energy orbital?
It falls back into a low energy orbital and releases a photon
It stays there until it is hit by another photon
It slowly falls back into a low energy orbital
It launches out of the atom
Different materials reflect, absorb, and transmit light waves in different ways. Which of these behaviors causes a material to get hotter in the sun?
Reflect
Absorb
Transmit
Light refraction causes the straw to appear in a different position inside this cup of water. Which of the following are also examples of refraction?
Camera lenses
Rainbows after rain
Neon Lights
Eye glasses
When a light wave hits these glasses, what may happen to it?
It is reflected
It is absorbed
It is transmitted
All of the above
What happens when a photon of the right frequency hits an electron in a low-energy orbital?
The electron becomes a positron
The photon is reflected back
The photon is absorbed, and the electron is excited into a higher energy orbital
The electron is absorbed into the nucleus
When light above a specific frequency strikes a material, electrons are emitted. This is called the...
Einstein effect
photoelectric effect
principle of electron energy
solar wind
Photons below the threshold _________ are unable to cause electrons to be emitted.
frequency
amplitude
wavelength
intensity
Light waves above the threshold frequency have enough energy to excite electrons regardless of the _________ of the electromagnetic waves
frequency
amplitude
wavelength
speed
Electromagnetic waves behave both like waves and like particles. This phenomenon is referred to as the...
Photoelectric Effect
Electromagnetic Force
Dual Nature of Light
Schrodinger's Dog Hypothesis
