Static Electricity
Circuits
Ohm's Law
Waves
Sound, Light and EMS
100
After Peter removes his sweater by pulling it over his head, he notices that his hair is standing straight up. What causes this to occur?
Static Electricity
100
A material through which electrons do NOT easily flow is a(n) ____.
Insulator
100
Draw the triangle for Ohm's Law
100
The energy a wave carries is measured by its ____.
Amplitude
100
The picture below shows what happens when light waves change speed when they pass from one medium into another. When this happens, the light is being ____.
Refracted
200
Lightening is _____________.
A large discharge of static electricity striking the nearest object.
200
In which type of circuit will adding another light bulb cause all the bulbs in that circuit to become dimmer?
Series Circuit-Circuit A
200
The statement that current is equal to the voltage difference divided by the resistance is known as ____.
Ohm's Law
200
When you squeeze together the coils of a spring and then release them, you are creating a ____ wave.
Longitudinal or Compressional Wave
200
Scientists and engineers may recommend carpets and draperies for the walls of a concert hall to reduce excess ____.
Reverberation (Echo)
300
A negatively charged object has _____ electrons than an object that is neutral.
More
300
Of the two circuit diagrams above, circuit __________ is the type of circuit that causes an entire string of decorative lights to go out when one of the bulbs burns out.
Circuit A
300
If the total resistance in a circuit is 20Ω, how much current is flowing through it when connected to 120 V?
6 Amps
300
Waves in which the particles of the medium move parallel to the motion of the wave are ____ waves.
Compressional Waves
300
___ light is produced by blending the three primary colors of light.
White
400
When you rub a balloon on your hair you are statically charging the object by_____________.
Contact
400
Of the two circuit diagrams above, circuit __________ is wired in parallel.
Circuit B
400
What amount of resistance is in a circuit with a 12 V battery and a current of 1.5 A?
8 Ohm's
400
Which of the following structures is labeled with the letter C in the diagram above?
Amplitude
400
In the doppler effect, _____________ changes as a object making noise changes location?
Pitch
500
What happens when you put two particles together that have the same charge?
They repel each other
500
______________ is the tendency of an object to oppose the flow of electrons
Resistance
500
If the total resistance in a circuit is 4Ω, what is the voltage difference of the battery the current is 2.25 A?
9 V
500
A wave will travel only as long as it has ____ to carry.
Energy
500
Sound waves are what kind of waves?
Compressional and mechanical waves
600
The following diagram shows an example of charging by __________________
Charging by Induction
600
If wires are made of the same material and are the same length, which would have greater resistance?
a. Thinner Wire
b. Bent Wire
c. Thicker Wire
d. Straight Wire
a. Thinner Wire
600
An electric bell has a resistance of 25 ohms and will not operate on a current of less than 0.25 amps. What voltage is needed?
6.25 V
600
What kind of waves are electromagnetic waves?
Transverse Waves
600
The speed of an electromagnetic wave is _____________?
300,000km/s in a vacuum