Parts of a Wave
What is the top of one wave crest to the top of the next wave crest called?
Wavelength
Do light waves travel faster through water or air?
Air
What type of waves are sound waves?
Mechanical waves
The Electromagnetic Spectrum
What colors are being reflected off of a red apple?
Red. All other colors are being absorbed.
Trough
What type of waves are light waves?
Electromagnetic waves
Sound energy is created by what?
Vibrations
Of the following colors, which has the lowest energy? Blue, Orange, Yellow, or Green
Orange
Which color on the EM spectrum has the longest wavelength?
Red
Why do we see a firework explode before we hear the boom?
Sound waves travel slower in the air than light waves
What medium does a sound wave travel fastest through?
Solids
What is the name given to a material in which only SOME light can pass through?
Translucent
What colors are being absorbed in a purple shirt?
ALL colors except purple
Frequency increases
If a light wave travels from the sun, through the atmosphere, then through a window, and finally through a fish tank of water. Through which substance did the light wave travel fastest?
The atmosphere
For sound waves, if the temperature of the medium decreases, then what happens to the speed of sound?
The speed of sound decreases
Electromagnetic waves are created when electricity and magnetism oscillate. What does it mean to oscillate?
To move back and forth
Why do white shoes look white?
The reflect ALL the colors of light
The distance from the top of a crest of a wave to the bottom of the trough of the wave is _______ the amplitude.
Double
Where do light waves travel the fastest? Why?
Outer space, because it is the closest thing to a perfect vacuum. Light waves travel fastest through vacuums/empty space.
If an alien in space asks another alien a question, what will their response be?
Nothing, you cannot hear sound in space! This is because outerspace acts as a vacuum.
Thinking back to the NASA video, why do we see the sun as yellow?
The temperature. If it was hotter it would look blue. If it was colder it would look red.
How do we see black objects?
No colors of light are being reflected, they are all being absorbed.