Year 3 Chapter 4: Forces and Motion
Push and Pull
Force = a push or pull
Push = a force that moves an object away from the source of the force
Pull = a force that moves an object towards the source of the force
Apply/Applied = to use something
EX) When I kick a ball, the applied force is my foot. The type of force is a push. The receiving force is the ball. The effect on the object is the ball moves.
Gravity = the pulling force of a large mass such as the Earth
Mass = the amount of matter in a material
Weight = a force caused by gravity pulling down on the mass of the object
Stopping and starting movements
Movement = the process of moving, changing position or shape
Shape = the outward form of something, its appearance
The shape of objects can be changed using force
Ex) rolling out dough, stretching a rubber band, or blowing up a balloon
Some objects take more force to change shape
Ex) metal, glass and cement all need machines to change shape
Forces speed up, slow down and change the direction of movement
Be able to explain how the experiment conducted in class resulted in the force speeding up, slowing down or changing direction.
Refer to your workbook page 64-65
How do the soles of different kinds of shoes move down a slope?
Refer to your workbook page 66-69