Sound
What causes sound?
Vibrations in the molecules of the air.
Reflect
What is the top of a wave called?
Crest
What is the electromagnetic wave has the highest frequency?
Gamma rays
When sound energy transfers from one material to another, what is it called?
Transmission
How does a lens cause light to refract?
It bends the light.
What is the bottom of a wave called?
Trough
What electromagnetic wave has the lowest frequency?
Radio waves
What is the name of the material that energy travels through?
Medium
What happens to a light wave if you increase its amplitude?
It gets brighter.
What is the hight of a wave when measured from the middle?
Amplitude
Why can electromagnetic waves travel through empty space?
They do not need a medium to travel.
What is the part in a microphone that detects sound waves?
Diaphram
Why does a prism separate white light into a rainbow of colors?
The different wavelengths of light bend, or refract, at different rates.
What is the distance between two crests?
Wavelength
Why are radio waves good to use for communication?
They can go through buildings, mountains, and other objects. They are not harmful to humans.
How do air particles travel away from a speaker?
Back and forth in the same direction.
What happens to the colors of light that you cannot see?
They get absorbed by the object.
As the wavelength increases, does the frequency increase or decrease?
Decrease
What is the difference between analog and digital signals?
Analog signals have a continuous change in color and brightness.
Digital signals use pixels.