Electromagnetic Waves
Electromagnetic waves are what type of wave?
Transverse waves
What part of the wave is the highest point of a wave?
The crest
What is the frequency of a 7.4 x 10-13 meter wave?
4.05 x 1020 Hz
Electromagnetic waves you can detect with your eyes.
Visible light
If it takes 2.537 million years for radio waves (which travel at the speed of light) to reach the next closest Galaxy (Andromeda) from Earth, how far away is this Andromeda Galaxy?
Hint: Remember to convert! :)
2.401 × 10^22
meters
What type of wave can travel through a vacuum / empty space?
An electromagnetic wave
The lowest part of the wave
The trough
What is the wavelength of a 2.59 x 1017 Hz wave?
1.16 x 10-9 meters
Why is the sky blue?
Nitrogen and Oxygen in the atmosphere reflect higher frequency colors (violet, indigo, blue) and absorb lower frequency colors (red, orange, yellow).
What electromagnetic waves are used to see bones
X-rays
What is the distance between two corresponding parts of a wave?
The wavelength
What is the energy of a 3.2 x 1018 Hz wave?
2.12 x 10-15 J
Which electromagnetic waves that have the lowest frequencies and carry the least energy?
Radio waves
What electromagnetic waves can cause skin cells to produce vitamin D, but can also cause skin cancer if you get too much exposure to them?
UV rays
If frequency of a wave is increased, its wavelength will _____________.
What is the frequency of a 1.31 x 10-22 Joule wave?
1.98 x 1011 Hz
Which electromagnetic waves have the highest energy?
Gamma rays
What electromagnetic wave is used to send and receive information over long distances?
Radio wave
If frequency of a wave is increased, ___________ also increases?
The energy
What is the wavelength of a 9.32 x 10-17 J wave?
2.13 x 10-9 meters
Which color on the visible light spectrum has the LOWEST amount of ENERGY?
Red