Light Emission
Waves
Color Mixing
Grab Bag 1
Grab Bag 2
100
This is what an electron must do when emitting light.
What is de-excite (or jump to a lower energy level)?
100
Name the three types of waves that interference occurs for.
What are light, sound, and water?
100
This color light results when red, blue, and green light are mixed together.
What is white light?
100
Electric potential does not depend on the amount of this quantity present.
What is electric charge?
100
The number of electrons delivered daily to an average American home by an average power utility in the mid 1980s was ...
What is zero?
200
This device emits coherent light.
What is a laser?
200
The period of a pendulum depends on this.
What is the length?
200
The sun appears this color when standing on the moon.
What is yellow-white?
200
A helium nucleus with two neutrons is also known as this.
What is an alpha particle?
200
This is what happens when the frequency of incident light matches the natural frequency of the material.
What is absorption?
300
At first green light is emitted when an electron in a substance makes a particular energy-level transition. This color light would be emitted if a lower jump in energy occurred in the atom.
What is red (yellow or orange)?
300
When astronomers look at light from distant galaxies, they observe a red shifting of the light. This tells them that the galaxies are ...
What is moving away from us?
300
This principle is utilized in creating all the different colors we see on our computer screens.
What is color addition?
300
Two polarization filters are laid on top of each other. Their polarization axes must be oriented this way in order to block all light.
What is perpendicular?
300
This fundamental force makes a large nucleus more unstable than a smaller one.
What is the electromagnetic force?
400
This is the fundamental source of electromagnetic radiation.
What is a vibrating charge?
400
This is the principle you are employing when you tune your radio to a certain station and the frequency of the internal electrical circuit matches the frequency of the radio station you wanted to listen to.
What is resonance?
400
When green is mixed with this color, white light results.
What is magenta?
400
This is an integer multiple of the fundamental frequency and contributes most to the quality of a musical note.
What is a harmonic?
400
In a double-slit experiment, this color light would give closer spaced fringes compared to yellow light.
What is blue?
500
This is when an object is able to create its own light. It means "to grow hot."
What is incandescence?
500
Draw the resulting wave on the board when the two waves shown overlap and interfere. (Instructor provided).
What is ?????
500
This is the color that a full moon appears through volcanic ashes spewed in the air that scatter red light.
What is cyan?
500
The atomic number changes by this amount when an isotope undergoes beta decay.
What is +1?
500
In the photoelectric effect, this change in incident light would result in higher velocity electrons being ejected by the photosensitive material.
What is higher frequency (energy)?