A student is constructing an electrical circuit. Which of the following can provide energy for the circuit?
A.electric generator
B. Wire
C. light bulb
D.buzzer
Answer: A. an electric generator
100
The type of energy a circuit always starts off with is ________________ energy.
Electrical
100
In a parallel circuit electricity has ______ path(s) to follow.
more than one
100
Some students test a plastic spoon as a connector in an electrical circuit. Electricity does not flow in the circuit. Plastic is most likely...
A. a load.
B. an energy source
C. a conductor
D. an insulator
D. an insulator
100
What are the physical properties of matter?
Color, Texture,Odor,Physical State, Density, Conductor/Insulator,Solubility, Mass, Magnetic
200
What is the role of a receiver in an electric circuit?
The receiver is the part of the circuit that receives electrical energy and can be turned on.
200
Which part of a circuit changes electrical energy into another form of energy?
The receiver
200
If one receiver stops working in a series circuit what happens to any other receiver in the circuit?
They also stop working.
200
Which material will best conduct electricity?
A. plastic
B. rubber
C. wood
D. silver
D. silver
200
Why would you need to wear protective gloves to lift a hot metal pan?
The metal pan conducts thermal energy.
300
Name 3 examples of an energy source.
Battery
solar panel
electric outlet
300
Which device can be added to an electrical circuit to convert electrical energy into mechanical energy?
A. a switch
B. a lightbulb
C. a fan
D. a speaker
C. a fan
300
Do you think Christmas Lights are an example of a series circuit or a parallel circuit? why do you think that?
They are an example of a series circuit because if one of the bulbs burns out the entire strand will not light up.
300
If you connect the wires of an electric circuit to a piece of jewelry why would the lightbulb in the circuit still turn on?
Because the jewelry is made of something that can conduct electricity.
300
Salt mixing into water is an example of its
solubility
400
Explain how a switch works in an electrical circuit.
When the switch is on the circuit is closed so electricity can flow. When the switch is off the circuit is open so electricty cannot flow.
400
If an electrical circuit has a bell for a receiverand a battery for an energy source what energy conversions will occur?
chemical energy --> electrical energy --> sound energy
400
What is an advantage of a parallel circuit?
If there is a break in 1 circuit the others can still work if they are complete.
400
Ms. Rivera wants to make an electric circuit but she is fresh out of copper wire. What are 3 other household items that she could use in place of wire to carry the electricity to the receiver?
silverware
metal necklaces
steel wool
keys
aluminum foil
etc.
400
Gas turning back into a liquid is
condensation
500
Where are the receiver, wires, and energy source located in a lamp?
The receiver is the lightbulb, the wires are located in the electrical cord and inside the lamp, and the energy source is the electrical outlet which leads all the way to a power plant.
500
Name a receiver that can transform electric energy into thermal energy and name another receiver that can transform electric energy into sound energy.
Thermal- lightbulb, heater, etc.
Sound- radio, speaker, phone, computer etc.
500
If all the receivers of a robot were wired in a series circuit, what would happen if the one of the lightbulb's in the robot burned out?
All the receivers of the robot would not work because the electricity only has one path to follow in a series circuit.
500
Why do electricians use wire that is coated in plastic when they are making new circuits?
This is because the wire can be dangerous to handle and can shock humans if they handle it when the circuit is on. The plastic coating helps to protect the electricians and us!
500
Some students put 2 ice cubes on separate plates. One ice cube has a mass of 80kg. The other had a mass of 40 kg. What would be the same for both ice cubes in this investigation?
The temperature at which the each ice cube melts. 0 degrees Celsius.