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How can you describe motion?
What are forces?
What are Newton's laws of Motion?
What are simple machines?
What is Energy?
100

It is all around you. It is how objects move at different rates in different ways.

Motion


100
It is a push or a pull that acts on an object. 

A force

100
It is a state of an object when all the forces acting on it balance each other. 

Equilibrium

100

It is a device that changes the direction or the amount of force needed to do work. 

Machine 

100

In Science it is the ability to do work or cause a change. It can change an object's shape, color, temperature and other qualities. 

Energy 

200

Describes the speed and the direction of an object's motion. 

Velocity

200

It is a force that pulls other objects towards another object. For example, The Earth pulls objects towards its center. 

GRAVITY

200

The tendency of an object to resist any change in motion. 

Inertia

200

They make work easier, examples of these are: a hummer, a screw driver, a doorknobe and a ramp. 

Simple machines. 

200

It is energy due to motion, the amount of this energy depends on its speed and mass. 

Kinetic energy

300

It is how far an object moves during a certain amount of time. 

To calculate it we use the formula:

distance/time

Average speed

300
It is the force that results when two materials rub against each other. 

Friction

300

This law says that unless a force acts on an object the object will remain in constant motion. 

First Law of Motion

300

It is one type of simple machine, it consists of a rope or cable that runs through a grooved wheel. 

A pulley

300

It is energy that is not causing any change now but could cause change in the future. It is sometimes called stored energy. 

Potential energy

400

BONUS

BONUS

400

It is done when a force moves an object. 

We can calculate it using this formula: force x distance

Work 

400

It is the rate at which the velocity of an object changes over time. 

Acceleration
400

It is made of a circular object, such as doorknob and a shaft, it makes work easier by reducing the amount of work needed. To pull an bucket out of a well, we can use this simple machine. 

Wheel and Axle

400

It is the energy from the electrons that forms molecules. The more electrons are involved in a bond the more of this kind of energy there is in the bond. 

Chemical energy. 

500
It states that when one object excerts a force on the second object, the second object excerts a force on the first object. This is called the action-reaction law of motion. 
Third Law of Motion 
500

It is the rate at which work is done. 

We can calculate it using: work/time

Power

500

It describes how acceleration, mass and net force are related. 

Second Law of Motion. 

500

It is another type of simple machine. It consists of a flat surface with one end higher than the other. 

Inclined plane. 

500

True or false?

Energy can not be created or destroyed. 

True