1. Jeopardy Final Jeopardy Fire away! $100 $100 $100 $100 $100 $200 $200
Not so
Simple
are they?
Let’s talk
about leverage
Systems,
Systems
Everywhere
What’s
your MA?
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Final Jeopardy

2. $100
Name the type of siege engine most frequently used in the Middle Ages?
A trebuchet

3. $200
Name the class and simple machine that is used to create a trebuchet.
1st Lever

4. $300
What is this part of the trebuchet called?
The fulcrum

5. $400
Describe when, and who are attributed to the invention of the trebuchet?
Chinese in the 14th Century.

6. $500
Describe, in detail, the difference between a trebuchet and a catapult.
Trebuchets are a TYPE of catapult, using gravity (with a counterweight) or traction (men pulling down), to propel the arm and often employing a sling at the end of the arm for greater distance. This is different from other catapults in that it doesn't use built up tension for it's throwing force.

7. $100 Define “Simple Machine”
A device that only requires a single force to work

8. $200
How many classes of levers are there? 3

9. $300
What kind of simple machine is this?
Pulley

10. $400 Name the two simple machines that are used in a wheelbarrow.
Lever, and Wheel and Axel

11. $500 Name all of the simple machines. Lever Wheel and Axel Wedge
Pulley
Inclined Plane
Screw

12. $100
Name the 3 parts of a lever.
Effort, Load (Resistance), Fulcrum

13. $200
A wheelbarrow is an example of which class of lever. How do you know?
2nd class lever, because the resistance (load) is located in the middle. (FRE, 123)

14. $300
Define “force arm”
The distance from the fulcrum to where the force is applied.

15. $400 Give the order and an example of each class of lever.
1st – teeter tooter (E,F,L)
2nd scissors (F, L, E)
3rd – hockey stick (F, E, L)

16. $500
What type of lever will always have a Mechanical Advantage greater than 1. Explain.
2nd class levers will always have a MA greater than 1 because the effort force is located further away from the fulcrum than the load force (meaning the effort arm will always be greater than the load arm – MA = effort arm/load arm)

17. $100
Define “system”
A group of parts working together for a common goal.

18. $200
Describe the difference between a social system and a physical system.
Physical System is group of physical parts, while the parts of social system are living organisms and the relationships create

19. $300 Describe the 3 parts of system.
Input – force, energy, or raw materials that you put into a system
Output - all of the tasks/services that the systems performs
Systems – the undesired outputs of a system

20. $400 Give examples of each:
“Social naturally occurring” and “physical man-made” sysyems
Social, Naturally occurring - bee hive
Physical, Man Made – pencil sharpener

21. $500
Draw the flow chart we have used to represent how we can categorizes systems.
Systems – physical or social, and each can be divided into man-made or natural occurring

22. $100 Define Mechanical Advantage
The advantage gained; specifically :  the ratio of the force that performs the useful work of a machine to the force that is applied to the machine

23. $200
What is the formula for calculating the Mechanical Advantage of a lever?
Effort Arm / Load Arm

24. $300 What does a MA of greater than 1 mean?
It describes a situation where it is actually easier to do the “job” then it “normally would be. It’s how much easier it is.

25. $400
What does a MA of 1 mean?
The input and output forces are equal. The job is no easier, or no harder to do with the use of the simple machine.

26. 5 - $500 Calculate the MA of the following situation.
MA = effort arm/load arm
MA = 6/4
MA = 1.5

27. Final Jeopardy
Using the 3 parts of a system, describe how a garden is considered a system.
Input – The things we put into the garden – seeds, soil, sunlight, water
Output – fruit, vegetables
Side Effects – animals, bugs,