1. RIDDLE
If you screw a light bulb into a lamp socket by turning the bulb towards the right with your right hand, which way would you turn the socket with your left hand in order to unscrew it while holding the bulb stationary?
To the right!!!

2. VOCABULARY

3. Match the words with the correct definition
INSULATORS
CIRCUIT
RESISTANCE
CURRENT
GENERATOR
The flow of electrons through a wire or any conductor
Device that produces electricity by converting mechanical energy into electrical energy
Materials that resist the flow of electric charges through them
A measure of a material’s property of opposing or reducing flow of electric current through it
A complete, closed path through which electric current flows

4. Can you identify the following items?
battery
socket
Light bulb
Power strip
plug

5. voltmeter
Electric circuit
Extension cord
Circuit breaker

6. What do these symbols represent?
circuit diagram
Scientists usually draw electric circuits using symbols;
What do these symbols represent?
Cell
lamp
switch
wires

7. Simple Circuits ………… circuit …………. circuit All in a row
1 path for electricity
1 light goes out and the circuit is broken
…………. circuit
Many paths for electricity
1 light goes out and the others stay on
series
parallel

8. measuring current
Electric current is measured in ………. (A) using an ammeter connected in series in the circuit.
amps A