Forces
What causes playground equipment to move?
Wind or people
What happens when equal force is applied to objects that have different weights?
The objects that weigh less will move more.
What is gravity?
Gravity is an invisible force that pulls things to the Earth.
What is a magnet?
An invisible force that can push or pull?
Name an object that has electromagnets.
speakers, microphones, chargers, doorbells etc.
What happens when force is applied to an object?
The object moves.
When you push a book across the table it will slowly come to a stop. Why does this happen?
Because of friction
What would happen without gravity?
There would be no life on Earth, everything would fly off into the universe.
How do magnets attract?
Magnets attract when they are facing opposite poles (North and South).
Do identical charges attract or repel.
They repel like magnets. For example a positive and positive charge repels.
Provide an example of a balanced force.
A book sitting on table, a train in constant motion, an apple hanging from a tree etc.
Which object will move more, a ping pong or a basketball?
A ping pong ball.
If you dropped a flat piece of paper and a paper crumpled in a ball from the same height, which would reach the ground first? Why?
The crumpled piece of paper would hit the ground first because there is less air resistance.
How do magnets repel?
Magnets repel when like poles are facing each other (north and north, south and south).
What happens when positive and negative electrical forces interact?
Opposite charges attract
What is a force?
Force is a push or a pull. To create motion we need force.
What slows down motion?
Why do things appear to fall at different speeds?
Because of air resistance.
What materials are magnetic?
Iron/Steel
How is an electric force similar to a magnetic force or gravity?
It is a non-contact force