Flashcards in Chapter 7 Deck (6)
What is a wave?
A periodic BACK AND FOURTH motion that transmits energy.
What is the amplitude of a wave?
The distance from the highest or lowest point in the middle
What is the frequency of a wave? What units are used to measure wave frequency?
Frequency of a wave: the number of complete waves (crest plus trough) that passes by a point in a given time.
Hertz: units used for # of waves per second or cycles per second
What is the speed of all electromagnetic radiation in a vacuum?
186,000 miles per second
- one group of electromagnetic waves us called the "Visible Light" part of the spectrum name the 6 other groups within the EM spectrum.
Radio waves, microwaves, infrared, visible, uv, x-rays, gamma rays