Light and Color
Sound
Magnetism
Electrostatics
Waves
100
What do all electromagnetic waves have in common?They all travel at the speed of light
They all travel at the speed of light.
100
Sound is produced when there are...
Oscillations in pressure.
100
What attracts ferromagnetic material?
Magnets.
100
What is ohms law?
Current is directly proportional to the voltage and inversely proportional to the resistance.
100
What are waves?
Disturbances that move through an empty space or through a medium.
200
What are the three primary colors?They are red, blue, and green
They are red, blue, and green.
200
An unpleasant combination of pitches is...
Dissonance.
200
What are areas on the magnet where magnetism is concentrated?
Poles.
200
What is electric power?
Rate at which electrical energy is converted into another form of energy such as mechanical, heat, or light.
200
Do electromagnetic waves need a medium?
No.
300
What kind of process is mixing light colors?This process is known as additive.
This process is known as additive.
300
Resonance occurs when...
A standing wave is created.
300
What transmits magnetic forces?
Magnetic fields.
300
What is a by-product of too much current?
Heat.
300
What is wavelength?
Length of one wave pulse.
400
What is seen when blue light shines through a cyan filter?
Blue light is seen.
400
In a standing wave in a pipe, two anti nodes are separated by...
One-half wavelength.
400
What is the law of magnetism?
Like poles repel, while unlike poles attract.
400
What are two safety devices used in circuits?
Fuses and circuit breakers.
400
What is damping?
It is a decrease in amplitude in a wave.
500
What is polarization of light?Light that oscillates with a specific pattern
Light that oscillates with a specific pattern.
500
What is frequency equal to?
F=1/T
500
What is magnetic domain?
A region in which many atoms have their magnetic fields aligned.
500
How do you calculate cost?
Cost is equal to energy times rate.
500
What is a period?
It is the second for one cycle.
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