Waves
This occurs when an object seems to have a different pitch as it moves towards or away from an observer.
What is the Doppler Effect?
This type of wave moves very fast through outer space.
What is a light wave?
This is the bouncing back of rays of light, sound or heat
What is reflection
As an object moves closer and closer to you, its frequency and pitch will ______.
increase
This is the distance from crest to crest, or from trough to trough
What is wavelength
This type of wave moves faster through solids than it does gases.
What is a sound wave?
This occurs when a wave changes direction as it leaves one material and goes into another material.
What is refraction
As an object moves farther and farther away from you, its frequency and pitch will ______.
decrease
This type of wave moves faster through gases than it does through solids.
What is a light wave?
This occurs when a wave bends around a corner or through a small hole.
What is diffraction
This type of wave has compressions and rarefactions.
What is longitudinal wave
As an object approaches you then moves away from you, its pitch will _____ then _____.
increase then decrease
This occurs when two waves combine to make a bigger wave.
What is constructive interference
This is a wave that has a crest and a trough.
What is a transverse wave
If a firetruck turns on its siren but doesn't move, its frequency and pitch will ______.
stay constant
This occurs when waves combine to make a smaller wave
What is destructive interference