Show:
What is a machine
Levers
Simple Machines
Simple Machines 2
Examples
100
In science, ____________ means the force moving something through a distance.
What is work?
100
A __________ is any kind of bar or rod.
What is a lever?
100
A ___________ is a wheel that turns on an axle. Most of them are grooved.
pulley
100
How many simple machines are there?
six
100
What class of lever is a seesaw?
class one
200
There are _________ forces involved in work.
two
200
A lever turns on a support called a _________.
fulcrum
200
This is a simple machine made of a wheel attached to a shaft.
wheel and axle
200
which is your favorite kind of simple machine?
200
What kind of simple machine is a ramp?
inclined plane
300
The force that you apply is called the _______ force.
effort
300
How many classes of levers are there?
three
300
This is a slanted surface used for raising objects to higher places.
inclined plane
300
True or false: all machines can be made from 3 simple machines.
false
300
a steering wheel is what kind of simple machine?
wheel and axle
400
The force that must be overcome is called the _____ force.
resistance
400
What class of lever is this: the fulcrum is in the middle.
class one
400
This is a simple machine made of a tapering piece of wood, metal, or other material.
wedge
400
True or false: the purpose of a machine is to make work easier.
true
400
an elevator is what kind of simple machine?
pulley
500
A ___________ is any device that can change the speed, direction, or amount of force.
What is a machine?
500
what class lever is this: the load is in the middle
class two
500
This is a simple machine made of an inclined plane wrapped around the length of a nail.
screw
500
Give an example of a pulley that has not been said.
flagpole, sails,
500
a knife is what kind of simple machine?
wedge