Circuits
A complete circuit must have this source of energy.
What is a battery (power source)?
This type of material allows electricity to flow easily.
What is a conductor?
Electricity that builds up on an object and discharges suddenly is called this.
What is static electricity?
Magnets attract objects made of this metal.
What is iron?
An electromagnet requires this to work
What is electricity (a power source)?
A light bulb will not light if the circuit is missing this
What is a complete path?
Metal paper clips are examples of this type of material.
What is a conductor?
Lightning is an example of this type of electricity
What is static electricity?
A magnet can pull a paper clip through this material.
What is wood, paper, cardboard, or plastic?
Unlike a bar magnet, an electromagnet can be ______.
What is turned on and off?
Wires in a circuit have this job
What is carrying electrical energy/current?
Rubber and plastic are examples of these.
What are insulators?
Electricity that flows continuously through wires is called this.
What is current (human-harnessed) electricity?
A student places cardboard between a magnet and paper clips. What should happen?
What are the paper clips still move toward the magnet?
Increasing the number of wire coils generally does this to an electromagnet.
What is make it stronger?
A student connects one wire from a battery to a bulb but forgets the second wire. What happens?
What is the bulb will not light because the circuit is incomplete?
Sam wants to cover a switch for safety. Which is the better insulator: metal or cork?
What is cork?
Socks coming out of a dryer stick together. What caused that?
What is a buildup of static charges?
Which investigation best tests how materials affect magnetic force?
What is placing different materials between the magnet and the object?
Why are electromagnets used in devices such as doorbells and speakers?
What is their strength can be controlled?
A circuit contains a battery, wires, bulb, and open switch. Why won't the bulb light?
What is the open switch breaks the circuit?
A student places a metal desk leg into an open circuit. What will happen?
What is the bulb will light because metal conducts electricity?
Name one difference between current electricity and static electricity.
What is current electricity flows in a circuit while static electricity builds up and discharges?
A student wants fewer iron shavings attracted to a magnet. What change would help most?
What is using a thicker barrier/material between the magnet and iron shavings?
Eva needs a magnet that can be turned on and off. Trent needs a constant magnetic field. Which magnet should each choose?
What is Eva chooses an electromagnet and Trent chooses a bar magnet?