Lesson 19
A force is a _____ or a ______.
Push or pull
This is a basic tool that helps apply force and make work easier
Simple machine
A type of simple machine found on cars and bikes
Wheel and axle
What type of simple machine is made of a wheel with a grooved rim and cord wrapped around it?
A pulley
A flat surface with one end higher.
Hint - a ramp
Inclined plane
Moving an object away from you is what type of force?
Push
A simple machine that helps lift an object (load)
A lever
The circular rod that goes inside the wheel.
Axle
This type of pulley has a wheel that stays in one spot.
Fixed pulley
Lucky Pick!!
The best teacher.....
Experience! Or, Mr. B, or MS Chelsie, or any other answer!
When an object changes position, it is in ______.
Motion
The balancing point of a lever
Fulcrum
What force stops a wheel and axle from spinning?
Fraction
This type of pulley is made of two different pulleys - fixed and movable.
Compound pulley
A screw is actually an ________ wrapped around a cylinder.
Inclined plane
This force slows down objects that are in motion.
Friction
The force that is applied to the opposite end of the lever.
Effort
Which wheel and axle will go faster when the same amount of effort/force is applied - a bicycle or a scooter? Why?
A bicycle because the wheels are larger.
What type of pulley is used to raise a flag?
Fixed pulley
This is a simple machine that is often used to hold many construction materials together.
A screw
A push or pull force between two particular objects.
Magnetism
If we want to lift a heavier load, but cannot increase the effort, what else should be increased?
The size of the lever.
What is different about the way a wheel and axle moves a load compared to the way a lever moves a load?
A wheel and axle moves a load across a distance while a lever simply raises or lifts a load.
The amount of force you need to lift a load when using a compound pulley.
Half as much force.
When using a wedge, the force begins downward and then moves _______.
Outward