Part 1
Which shape sounds like the word "circuit" and has no gaps or spaces?
A) Square
B) Circle
C) Triangle
D) Star
B) Circle
A battery gives electricity its energy. The battery is the power ________.
A) source
B) load
C) wire
D) light
A) source
You can think of an atom like a tiny ______:
A) Toy car
B) Building block
C) Computer screen
D) Light bulb
B) Building block
What type of small round battery is used to power the simple LED circuit?
A) AA battery
B) Coin battery
C) Car battery
D) D battery
B) Coin battery
What is a circuit?
A) A light bulb that turns on
B) A battery inside a flashlight
C) A path for electricity to travel along
D) A switch that turns off
C) A path for electricity to travel along
Which part of a simple circuit lights up when electricity passes through it?
A) The battery
B) The light bulb
C) The plastic switch
D) The open space
B) The light bulb
What kind of charge do electrons have?
A) Positive (+) charge
B) Negative (-) charge
C) No charge
D) Double charge
B) Negative (-) charge
An LED has two metal "legs." Which leg is the positive (+) side?
A) The long leg
B) The short leg
C) The thick leg
D) The curved leg
A) The long leg
Standard electricity is made of tiny floating pieces called ____________ (-).
electrons(-)
What device do we use to open or close a space in a circuit to turn a light on and off?
a switch
What kind of charge do protons have in an atom?
a positive (+) charge
Which two subatomic particles have an electrical charge?
A. Protons and neutrons
B. Neutrons and electrons
C. Protons and electrons
D. Only neutrons
C. Protons and electrons
In a circuit, the object you want to power (like a light bulb) is called the ____________.
load
Name all 3 main parts needed to make a simple working circuit.
1. a power source (battery)
2. a load (light bulb)
3. wires (conductive material)
Which part of an atom has no charge?
neutrons
What are the four steps that happen when power flows from the battery to make the light turn on?
1. Battery holds power
2. Battery pushes power through wires
3. Power goes into the light's two metal legs
4. The light turns on
Why is a power source important in a circuit?
because it gives the circuit power/energy
to make the light work.
If you connect an LED to a battery and it does not turn on, but all wires are connected, what might be wrong with how the LED's legs are placed?
The legs are backwards (the long positive leg is connected to the negative side, or vice versa)
If the LED does not light up when attached to the battery, what should you try doing to fix it?
Turn it around so the long/short legs match the correct sides
How much power does each coin cell battery have?
3 volts