Vocabulary
Machines with few or no moving parts.
What are simple machines?
The six simple machines.
What are: inclined plane, screw, lever, pulley, wheel and axle and wedge?
Which is not a simple machine?
a. lever
b. spring
c. wedge
d. screw
What is b. spring?
A wheel with a rope or belt around it.
What is a pulley?
How many basic types of simple machines are there?
What is six?
Machines made up of more than one simple machine combined.
What are complex machines?
This simple machine is often used to hold things together.
What is a screw?
1. A triangular machine that is used to split or hold objects together.
2. Give an example.
1. What is a wedge?
2. What is an axe, chisel, scissors...
Two types of simple machines that contain inclined planes.
What are the screw and wedge?
Name 2 types of simple machines in a shovel
What are a wedge and a lever?
A push or pull on an object.
What is Force?
A modified incline plane wrapped around a central core.
What is a screw?
The type of simple machine you would use to pry a nail out of a board.
What is a lever?
Three levers you have in your body.
What are arms/elbows; legs/knees; fingers/knuckles; toes/knuckles etc...
A rod attached to the center of a wheel is called?
What is an axle?
The amount of help you can get by using a simple machine.
What is Mechanical Advantage?
What unit is used to measure force?
What are Newtons?
1. What class of lever has the fulcrum between the load and effort?
2. Give an example?
1.What is a first-class lever?
2. see saw; balance scale; scissors, etc..
When you increase the distance of a moving object on an inclined plane ...
A. Less force is needed to move an object
B. More force is needed to move an object
C. The amount of force does not matter
D. There is no reason to worry about the longer distance, because it will not make a difference in the amount of work is done
What is:
A. Less force is needed to move an object
1.The class of lever with the load between the fulcrum and effort.
2.Give an example.
1. What is a second-class lever?
2. What is a wheel barrow, nut-cracker etc...
The formula to calculate work.
What is Force x Distance?
Simple machines require less force to do work but require more___________________
What is distance?
How would you design a screw with a stronger mechanical advantage?
What is make the pitch of the screw closer together?
How you increase mechanical advantage in a pulley system.
What should you do to reduce the amount of effort needed to lift something using a first class lever?
What is moving the fulcrum closer to the load?