electricity

SATs Electricity Questions

What is electricity?
Electricity is made from the movement of electrons. Every single item in the whole world is made up of tiny, tiny things called atoms. Electrons are inside each of these tiny atoms. Electrons are so small that if you took a million of them, they would barely reach across the top of a small pin. These electrons have a negative charge causing them to move from one area to another, creating electricity.

Electricity flows easily through metals but not through other materials.
Electricity can flow when there is a complete circuit.
Metals are good electrical conductors.

The answers are on this page. Try and think of what you would say before clicking on the answers. How near were you to the correct answer?

1. What are the two places on a battery to which circuit wires can be attached called? AnswerTerminals (positive and negative).

2. What is the path electricity takes called? AnswerA circuit

3. Materials through which electricity can pass are called ___________ conductors Answerelectrical

4. Materials that do not allow electricity to pass through them are called electrical ____________ Answerinsulators.

5. True of False? Electricity is a flow of negative charge AnswerTrue

6. What do you use to measure a current in a circuit? AnswerAn ammeter

7. What components do you need to make a simple series circuit to light one bulb? AnswerOne bulb, one battery,one switch and some wire.

8. Which is the odd one out and why?
Steel
glass
iron
tin
AnswerGlass because it isn't a metal and thereforedoesn't allow electricity to pass through it.

9. Why are plug sockets covers made of plastic? Answerbecause plastic doesn't allow electricityto flow through it - it is an electrical insulator.

10. True of False? The lead of a pencil (graphite) can conduct electricity. AnswerTrue - graphite is one of the few non-metallicmaterials to conduct electricity fairly well.

11. If you put a second battery in a simple circuit, how will it affect the brightness of the bulb? AnswerThe bulb will be brighter.

12. What is happening when a switch is