Energy Transformation
Insulator or Conductor
Circuits
Forces and More
Miscellaneous
100
What type of energy transformation is turning on a light bulb?
electrical to thermal and light
100
A wooden craft stick ?
insulator
100
Why must a circuit be a complete loop with no gaps and not a straight line ?
So the power source is connected to the object using electricity
100
True or False
The greatest change motion occurs when a large force is applied to an object with a large mass.
False ... The greatest change occurs when a large force is applied to an object with a small mass.
100
What is the purpose of a wall switch ?
It closes a circuit so that electric current can flow through the lights.
200
What kind of energy transformation is an electrical oven ?
electrical energy into thermal energy
200
Nail ... Insulator or Conductor?
Conductor
200
What kind of circuit causes everything to tun off if one part of it is turned off?
A series circuit
200
What kind of force cause things to fall from the sky ?
Gravity
200
What is the main difference between a series circuit and parallel circuit ?
In a series circuit, there is only one possible path that current can follow. In a parallel circuit, there are two or more possible paths.
300
Which one of these convert electrical energy into motion ?
- light bulb
- power saw
- door buzzer
- water faucet
power saw
300
what must all electrical circuits have ?
A battery or power source
300
What happens to bulb A and C if bulb B burns out ?
Both bulbs will stay lit ?
300
What is the purpose of a circuit breaker ?
to switch off a circuit when it is not being used
300
Which part of the calculator is the source of electric current?
S, the light-sensitive panel
400
When a light bulb in a room burns out, the other bulbs keep working. What reasoning explains why the broken filament doesn't stop electric current from flowing to the other lights?
The light bulbs are in a parallel circuit so they continue to get current.
400
Glass... Insulator or Conductor
Insulator
400
What kind of circuit is this ?
Paralell circuit
400
What happens if there is too much current in the circuit?
Wires become hot and it overheats
400
What will turn on when the switch is closed ?
The motor and buzzer
500
What king of energy transformation is turning on a speaker?
Electrical to sound
500
When you plug in your lamp and turn it on, the light does not shine. Which of the following is a possible explanation for the light not coming on?
You plugged the lamp into an open circuit.
500
Which combination of light bulb removal will cause the other light bulbs to go out?
B and C
500
Which of the following must be part of an electric circuit?
- copper wires
- light bulb or buzzer
- switch or circuit breaker
- battery or other source of current
battery or other source of current
500
What happens to Bulbs A and D if Bulbs B and C are removed
They will stay on