Topic 5.7–5.8: Properties of electromagnetic waves
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10 Terms
What type of wave is every electromagnetic wave?
Transverse.
What speed do all electromagnetic waves travel at in a vacuum?
3 × 10⁸ m/s.
Do all electromagnetic waves travel at the same speed in a vacuum?
Yes, all travel at 3 × 10⁸ m/s.
What do electromagnetic waves transfer?
Energy from a source to an observer without transferring matter overall.
How do electromagnetic waves transfer energy?
They carry energy through oscillating electric and magnetic fields.
Can electromagnetic waves travel through a vacuum?
Yes, they do not require a medium.
Give an example of an electromagnetic wave transferring energy.
Sunlight transfers energy from the Sun to Earth.
Why can light travel through space?
Electromagnetic waves do not require particles or a medium to travel.
What is the relationship between electromagnetic wave frequency and energy?
Higher-frequency electromagnetic waves carry more energy per photon.
What is the relationship between wavelength and frequency in a vacuum?
As wavelength increases, frequency decreases because wave speed is constant.