Guess the machine!
I am used to split materials.
What is a wedge?
With all simple machines, as the _____________ increases, the amount of effort require to do work ____________.
What is distance and decreased?
Name a lever you would find at school
What is a stapler, door, see saw?
What are the six simple machines?
Lever
Pulley
Screw
Inclined Plane
Wheel and Axle
Wedge
I am used to reduce friction and travel further.
What is a wheel?
Write an equation for a BALANCED LEVER.
What is distance x weight = distance x weight?
What kind of simple machine is a knife?
What is a wedge?
__________ is what the simple machine helps you do. __________ is the force applied to do that thing.
What is work?
What is effort?
I am comprised of a inclined plane wrapped around a cylinder.
What is a screw?
If a load is 40 pounds, how much force would be required to lift it using a doubled pulley?
What is 20 pounds of force?
DOUBLE JEOPARDY
What kind of sandwich is each lever?
ex. effort sandwich
Class One: fulcrum sandwich
Class Two: load sandwich
Class Three: effort sandwich
Name the four parts of a lever.
What are the: Arm, Fulcrum, Load, Effort
We are ALL used to lift heavy objects.
What is a lever, a pulley, and inclined plane?
A weight of 40 pounds is placed 2 feet from the fulcrum. In order to balance the lever, what could be on the other side?
a weight that is 20 pounds and 4 feet from the fulcrum
a weight that is 80 pound and 1 foot from the fulcrum
Name a pulley in this classroom.
What are the light shades?
What are the two ways simple machines help people do work?
1. Change the direction of force
2. Change the amount of force needed to do something
We are all used to change the DIRECTION of force.
What is a screw, a pulley, a lever, and a wedge.
Name the ideal version of each machine: pulley, wheel and axle, and screw.
ex. the ideal lever is as LONG as possible with the thing its load as FAR as possible from the effort
pulley- infinite number of pullies
wheel and axle- giant wheel with tiny axle
screw- long screw with the largest number of grooves
What kind of simple machine is a jar lid?
What is a screw?
DAILY DOUBLE
Which simple machines did the ancient Egyptians have?
Lever
Inclined plane
Wedge
Screw