The Electromagnetic Spectrum
What is the only part of the electromagnetic spectrum that you can see?
Visible Light
This part of a walkie talkie takes in radio waves.
Antenna
What are the two types of signals?
Digital and analog
What happens to light when it hits a mirror?
It is reflected.
A very loud sound would produce a wave with a high ____________________.
Amplitude
These waves can be used to cook your food.
Microwaves
This part of a radio turns radio waves into music you can hear.
Receiver
What type of signal does an iPad use?
Digital
What are the 7 different colors of visible light?
Red, orange, yellow, green, blue, indigo, violet
A low-frequency sound also has a low _____________________.
Pitch
This type of electromagnetic radiation will give you a sunburn.
Ultraviolet Light
This part of a cell phone sends out radio signals.
Transmitter
What are digital signals made of?
Values or Numbers
What 2 things happen to light when it enters a prism?
It is refracted and splits into the colors of the spectrum.
Crest and trough
This falls right before visible light on the electromagnetic spectrum.
Infrared
What type of frequency does a radio wave have?
Low frequency
What is one type of information you can send using a digital signal?
Words, pictures, music, etc.
White
This type of wave moves in a line.
Plane Wave
These waves have the highest frequency on the electromagnetic spectrum.
Gamma rays
What type of wavelength does a radio wave have?
Long wavelength
What does a microphone do to the sound waves coming from your voice?
It changes them into a signal.
This describes an object that does not allow light to pass through it.
Opaque
Why can't sound travel through space?
There is no air in space and sound waves need a medium to travel through.