Magnets: Attract & Repel
What happens when two north poles are placed near each other?
They repel
Can a magnet change the motion of an object without touching it?
Yes.
Does a moving object have energy?
Yes
What type of circuit allows a bulb to light: open or closed?
Closed.
Do magnets have to touch an object to change its motion?
No.
What happens when a north pole and a south pole are placed near each other?
They attract.
A magnet pulls a paper clip toward it. Is the magnet changing the paper clip's motion?
Yes
A bowling ball rolls down a lane. When does it have energy?
While it is moving.
What does a closed circuit have that allows electrical energy to transfer?
A complete path.
If a magnet is facing North and north: do they attract or repel?
Repel
Two magnets have their south poles facing each other. Will they attract or repel?
Repel.
A toy car has a north pole facing backward. A student wants to push the car forward using another magnet behind it. Which pole should face the car?
North.
A bowling ball hits the pins and the pins fall. What happened to the energy?
Energy transferred from the bowling ball to the pins.
What happens when there is a gap in a circuit?
The circuit is open, so electrical energy cannot travel through the complete path.
If a magnet is facing North and South: attract or repel?
Attract
Complete the rule: Like poles ______ and opposite poles ______.
Repel; attract.
A paper clip moves toward a magnet even though the magnet never touches it. What causes the paper clip to move?
The force from the magnet.
A moving soccer ball hits a cone and makes the cone move. What does this show?
Energy can transfer from one moving object to another object and cause it to move.
What is the job of a switch in a circuit?
A switch opens or closes the circuit.
A magnet pulls a paper clip toward it. What two science ideas are shown: force, motion, or electricity?
Force and motion
A student brings two magnets close together without touching them. The magnets move toward each other. What can you conclude about the poles facing each other?
Opposite poles are facing each other.
Explain how a magnet could be used to move a metal object without touching it.
The magnet can attract or repel the object and change its motion without touching it.
A toy car is moving and crashes into another toy car. The second car starts moving. What caused the second car to move?
Energy transferred from the first car to the second car.
A student connects a battery, wires, and bulb, but the bulb does not light. The circuit has a gap. What should the student do?
Close the circuit by completing the path.
A custodian needs to pick up small metal objects mixed in with trash without touching them. What could the custodian use, and how would it work?
A magnet. The magnet would attract the metal objects and change their motion without touching them.