What is the force that causes an object to change its motion or shape by touching it?
100
A lever is a rigid rod that rotates at a point anywhere along the lever. The point where the lever rotates is called the fulcrum.
What is a lever? What is the rotating point called?
100
Two or more simple machines put together to create another machine.
What is a complex machine?
100
Friction
What is a contact force that resists the motion of a object?
200
Non-Contact Force
What is the force that causes an object to change its motion or shapt without touching it?
200
A wheel and axel consist of a large wheel connected to a small wheel through its centre. The small wheel/arm is called the axel. When the axel turns, so does the wheel.
What is a wheel and axel?
200
Double pulley in the chains.
In a bike, where would you see a pulley?
200
Wedge
What simple machine pushes objects apart, or splits them up into two pieces?
200
A fixed pulley is when the pulley is attached to something that does not move. A moveable pulley is when the rope is attached to something that does not move and the load moves up when the rope is pulled.
What is the difference between a fixed pulley and a moveable pulley?
300
A push or a pull that causes an object to start or stop moving, or changes the direction an object is moving.
What is force?
300
When the fulcrum is between the effort and the load. (see saw)
What is a first class lever?
300
The staple itself.
In a stapler, where would you find the wedge?
300
Screws
What simple machine is like an inclined plane but it is used to hold objects together?
300
Magnetic Force or Magnetism
What is it called when magnets pull or attract metals towards them?
400
Spring Scale - Newtons
How do we measure force?
400
The load is between the effort and the fulcrum. (wheelbarrow)
What is a second class lever?
400
The part of the stapler that sits on the table.
In a stapler, what is a lever?
400
Inclined Planes
A wheel chair ramp and a ramp to rolls a dolly onto a truck are examples of what simple machine?
400
Load is a weight to be carried or moved. Effort is the amount of force you need to apple to make the simple machine work.
What is the difference between load and effort?
500
A pulling force caused by gravity. It is a non-contact force.
What gravitational force?
500
When the effor is inbetween the fulcrum and the load.
What is a third class lever?
500
Answers may vary.
Name a household item (complex machine) that we use everyday. Label all of the simple machines used the complex machine.
500
blade of an axe, knife, door stops, etc
Where do you see wedges?
500
A pulley that uses both a fixed pulley and a movable pulley.