Forms of energy
What form of energy lets us see light from a lamp or the sun?
Light energy
What provides energy in a simple circuit?
A battery ( power source)
What type of circuit allows electricity to flow?
A closed circuit
In a series circuit, how many paths does electricity have?
one path
In a parallel circuit, how many paths does electricity have?
More than one path
What form of energy is energy of motion?
Mechanical or kinetic energy
What material is used in circuits to allow electricity to flow?
A conductor (such as metal wires)
What happens to a bulb in a closed circuit?
It lights up
What happens to all bulbs in a series circuit if one goes out?
All the bulbs go out
What happens to other bulbs in a parallel circuit if one bulb goes out?
The other bulbs stay on
A toaster turns electrical energy into what form of energy?
Thermal (heat) energy
Name a circuit where the circuit is broken and electricity cannot flow
An open circuit
If a switch is OFF, is the circuit open or closed?
Open
Why do bulbs in a series circuit often look dimmer?
They share the electrical energy
Which type of circuit is used in most homes?
Parallel circuits
A speaker uses electrical energy to make music. What form of energy is music?
Sound energy
Why does a light bulb not turn on in an open circuit?
Electricity cannot complete the path
A circuit has a battery, wires, and a bulb, but the bulb is not lit. Name one possible reason.
The circuit is open/ loose wire/ dead battery
If you add more bulbs to a series circuit, what happens to the brightness?
The bulbs get dimmer
Why are parallel circuits safer for homes than series circuits?
Appliances work independently and don't all turn off if one goes out.
A fan is plugged in. It spins and moves air. Name two forms of energy involved.
Electrical energy and mechanical energy
Why are wires usually covered in plastic?
Plastic is an insulator
A student says, " The circuit is closed, but the bulb still doesn't light." What is the best explanation?
The battery is dead or the bulb is burnt out.
Why might holiday lights wired in series be a problem?
If one bulb goes out, all lights turn off
A student wants all bulbs equally bright and still working if one breaks. Which circuit should they use and why?
Parallel circuit because each bulb has its own path