Name: Class: Date: Physical Science

• 
  Is the weight lifter doing the same amount of work when he lifts the 1200N barbell 1m as when he lifts the same barbell 2m? ________ Explain.
  

• 
  What is work in physics?
  

• 
  What is a joule?
  

• 
  How do machines make work easier?
  

• 
  How do you find mechanical advantage of a lever?
  

• 
  What causes the mechanical advantage of the inclined plane to be less than that of the lever?
  

• 
  Explain how an inclined plane does work?
  

• 
  How do you find the mechanical advantage of an inclined plane?
  

• 
  Explain how a lever does work?
  

• 
  What are the three types of levers? Give examples of each?
  

• 
  Explain how a screw does work?
  

• 
  Explain how a wheel & axel does work?
  

• 
  How do you find the mechanical advantage of a screw and wheel & axel?
  
  1. 
     Screw-
     

2. 
   Wheel and Axel-
   

• 
  Explain how a pulley does work?
  

• 
  What are the three type of pulleys?
  

• 
  How does each type of pulley make work easier?
  
  1. 
     
     

URL- http://www.msichicago.org/fileadmin/Activities/Games/simple_machines/

First Inclined Plane________________-

Second Inclined Plane______________-

First Lever (Fulcrum Placement)______________-

Second Lever(Fulcrum Placement) ______________-


Wheel and Axle

First Wheel and Axel______________-

Second Wheel and Axel______________-

Pulley

First Pulley______________

Second Pulley______________

Part 3-Rube Goldberg Machine

http://pbskids.org/zoom/games/goldburgertogo/

Directions- Describe how this Rube Goldberg Machine works?

• 
  What simple machines do you see in this Rube Goldberg Machine? List 4 specific examples and what kind they are. Example – Scissors are a wedge
  
  1. 
     
     

3.
4.

• 
  How does this Rube Goldberg Machine Work?
  

• 
  What is your total score the first time?________________________
  

• 
  What is your total score the second time?______________________
  

• 
  What did you struggle with?
  

URL- http://www.quia.com/cm/42409.html?AP_rand=1249946342

• 
  What is your total score the first time?______________________
  

• 
  What is your total score the second time?____________________