Basics of Electricity
What are positive and negative charges, and how do they interact with each other?
Opposite charges attract, and similar charges repel.
What happens if you remove a bulb from a circuit?
In a series, all bulbs go out; in parallel, others stay on.
Can you make a magnet with electricity? How?
Moving the magnet pushes electrons in the wire.
How do microwaves heat up food?
They make water molecules vibrate, creating heat.
Why do you sometimes feel a small shock when you touch a metal object after walking on a carpet?
Extra electrons jump from you to the metal, causing a shock.
How does flipping a light switch turn the lights on or off in your room?
A switch connects or breaks the electrical circuit.
How do wind turbines generate electricity?
They spin magnets near coils of wire to produce current.
Why can you hear someone talking on the radio even if they are far away?
Radio waves carry sound signals to your radio.