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? $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 Final Jeopardy

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

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

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

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

$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.

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

$200 How many classes of levers are there? 3

$300 What kind of simple machine is this? Pulley

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

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

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

$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)

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

$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)

$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)

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

$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

$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

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

$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

$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

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

$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.

$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.

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

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,