MEGradedExercises2014



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Click these links for summaries of all Graded Exercises for the study guide...

ME1: PowerUp Game

 * 1) The PowerUp Simulation asks you to choose power plants for a city, considering their cost and environmental impact, as well as how much power they produce. Keep trying until you get a successful combination of power plants, and upload a screenshot showing that you reached your goal.
 * 2) Describe the most difficult choice you had to make, and how you decided which power plant to choose.

ME2: PowerUp Data

 * 1) Visit PowerUp Data Exercise on Quia to try a Quia exercise using data from the PowerUp simulation. Keep at it until you earn a perfect score.
 * 2) Figure out a way to reach the PowerUp goals using the spreadsheet linked here: PowerUp Spreadsheet on GoogleDrive . When you reach the PowerUp goals on the "How Many" tab, take a screenshot of your solution, and upload it here.
 * 3) Explain how you made your choices for Question 2, and why you think this is a good overall plan for a city.

ME3: Balance Exercise

 * 1) Take a screenshot of the Quia page showing your perfect score for the
 * Balance Exercise on Quia (CP), and upload it here.
 * Balance Exercise on Quia (H), and upload it here.
 * 1) Explain how the numbering of the pegs gives you a mathematical method for deciding if it balances.

ME4: Lever the Obelisk

 * 1) Lever the Obelisk with the fulcrum in the left-most position. When you succeed, take a screenshot (command/shift/4) and upload it here.
 * 2) Lever the Obelisk with the fulcrum in the middle position. When you succeed, take a screenshot (command/shift/4) and upload it here.
 * 3) Lever the Obelisk with the fulcrum in the right-most position. When you succeed, take a screenshot (command/shift/4) and upload it here.
 * 4) Study your screenshots, and explain what "Force-Distance Tradeoff" means in this exercise.

ME5: Mechanical Advantage

 * 1) Upload a screenshot of the tongs with the following annotations:
 * location of the fulcrum;
 * location of the input force;
 * location of the output force;
 * ratio showing the input distance/output distance;
 * the tong's mechanical advantage
 * 1) Upload a screenshot of the test-tube clamp with the following annotations:
 * location of the fulcrum;
 * location of the input force;
 * location of the output force;
 * ratio showing the input distance/output distance;
 * the tweezer's mechanical advantage
 * 1) Explain why some machines have a mechanical advantage larger than one and some have a mechanical advantage lower than one.

ME6: Mousetrap
Follow [|this link to the Mousetrap Puzzle] and put the pieces in an order that would trap the mouse when it pulls on the cheese and supplies the "activation energy". Upload the screenshot here.
 * 1) Find a block in the Mousetrap Puzzle that shows a form of STORED ENERGY being activated. Draw a circle around the source of the STORED ENERGY, and an arrow showing how the ACTIVATION ENERGY releases it.
 * 2) Find a block in the Mousetrap Puzzle that shows a device that TRANSFERS ENERGY from one spot to another. Draw arrows to show where the INPUT FORCE is applied and where the OUTPUT FORCE Is produced.
 * 3) Give examples of two devices in your home: one that TRANSFERS energy without adding any new energy, and one that ACTIVATES energy that has been stored.

ME7: Leverage of Tools

 * 1) Click this link to get to the Quia quiz . When you get a perfect score, screenshot the "success screen" and upload it here.
 * 2) Give an example showing how the same tool could have two different mechanical advantages, depending on how you use it!

ME8: Gears

 * 1) Visit this Gears Exercise on Quia (H) , or this Gears Exercise on Quia (CP) , earn a perfect score, and upload a screenshot of your "Success Screen" here!
 * 2) Visit this Gear Chooser Simulation, and adjust the gears to produce the combination with the greatest speed multiplier.
 * Annotate the image with a value of the speed multiplier.
 * Take a screenshot, and upload the image here.
 * 1) Visit this Gear Chooser Simulation, and adjust the gears to produce the combination that would be the best "Ultra Hill Climber."
 * Take a screenshot, and upload the image here.
 * 1) With levers, we said that you cannot increase your output energy, but you can produce a Force-Distance Tradeoff.  How does this idea apply to gear combinations?

ME9: Simple Machines

 * 1) Visit this website (Simple Machine Sim ) to build a virtual treehouse.  Upload your picture of the treehouse here!
 * 2) Visit this link (ME9: Six Simple Machines ) to find the Quia questions, and upload your "success screen" here.
 * 3) What is the general rule for finding the mechanical advantage of any simple machine?