When you exert a force on an object that causes the object to move some distance.
What is work
100
Tools such as knives, water faucets, screwdrivers, and ramps are examples of?
What is simple machines
100
Levers have _________ classes
What is three
100
A flat surface that is tilted so that one end is higher than the other.
What is inclined plane
100
An inclined plane wrapped around a cylinder or cone.
What is screw
200
Lifting bookbag, grocery bags, and lifting small child
What is examples of work
200
The six different types of simple machines.
What is levers, inclined plane, pulley, wheel and axle, wedge, and screw.
200
A rigid object that can move a load by pivoting (turning) on a fixed point called a fulcrum.
What is Lever
200
A wheel with a grooved edge through which a rope is pulled.
What is pulley
200
A nail, axe, and your mouth are examples of?
What is wedges
300
The amount of work done on objects in a unit of time.
What is power
300
Simple machines make work easier by allowing us to?
What is move a load, or weight, more easily.
300
Hockey sticks and baseball bats are examples of this type of lever.
What is third class lever
300
This type of pulley is attached to an overhead beam or some other object.
What is fixed pulley
300
This combination reduces the amount of effort needed to move a load.
What is wheel and axle
400
Work divided by time = ?
What is power
400
Simple machines __________ the force that must be used to move the load.
What is change
400
This type of lever has the effort and fulcrum at opposite ends and the load in the middle.
What is second class lever
400
When the inclined plane is titled at a high incline, _________ effort will be needed to move an object up the inclined plane. In contrast, if the inclined plane is titled at a lower incline, ________ effort is needed to pull the object upwards.
What is more, less
400
Drill bits, jars with twist-on lids, and hose couplings are examples of?
What is screws
500
Work is measured in __________ and time in _________ _______ _________
What is joules, joules per second
500
Other examples of simple machines
What is conveyer belt and flagpole
500
A seesaw is a type of first class lever because? (where is the fulcrum, load, and effort?)
What is Fulcrum is between the load and effort
500
Every morning Jordan raises the flag on the flagpole outside of school. What type of simple machine is used to raise the flag up the flagpole?
What is fixed pulley
500
Doorknobs, steering wheels, and gears are examples of what kind of simple machine?