Light Waves
Light is a type of energy that travels in straight lines, called _______.
What are rays?
Heat energy that moves from a hot sidewalk to your shoe uses this type of transfer.
What is conduction?
The very top part of a wave is called the _______.
What is the crest?
When a wave bounces off a wall, this happens to the wave.
What is reflection?
The three basic colors of light are Red, Green, and Blue, which are the _______ colors.
What are primary colors?
Light travels incredibly fast—how fast is it, in round numbers? (Hint: It’s 300,000 km/s.)
What is very fast (or 300,000 km/s)?
This is the way heat travels from the sun through empty space to the Earth.
What is radiation?
The distance between two crests (tops) of a wave is called its _______.
What is wavelength?
The distance between two crests (tops) of a wave is called its _______.
What is diffraction?
When you mix the primary colors of light, you usually get this color.
What is white?
What part of the electromagnetic spectrum is light that our eyes can see?
What is the visible spectrum?
Heating a metal spoon in hot soup is an example of this type of heat transfer.
What is conduction?
The bottom part, or lowest point, of a wave is called the _______.
What is a trough?
When a wave goes from air into water, it bends. This bending is called _______.
What is a trough?
A green leaf looks green because it absorbs all colors of light EXCEPT this one.
What is green?
What do we call the rainbow of colors produced when white light is split apart by a prism?
What is the spectrum (or dispersion)?
If you feel warmth coming from a campfire, you are feeling this type of heat transfer.
What is radiation?
The number of waves that pass a certain point every second is called the wave’s _______.
What is frequency?
If two small waves meet and create one much bigger wave, this is called _______ interference.
What is constructive interference?
Mixing red light and blue light together makes this color.
What is magenta?
This is the term for how bright a light source appears.
What is intensity (or brightness)?
Heat that moves by stirring a liquid, like when boiling water, is called this.
What is convection?
In a wave, the measure of how tall the wave is from the center line is called its _______.
What is amplitude?
When a wave goes into a new material and slows down, it will often bend. This is also known as _______.
What is refraction?
When you mix all three primary colors of light together, you get this color.
What is white?