MATERIAL COST MAXIMUM AMOUNT

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1 THE CHALLENGE: Using only the materials on the list, your task is to design a device capable of protecting an egg (passenger) from a 22m fall and make as much money as possible when constructing your design. MATERIALS: You will be allowed to use only the materials below for constructing your device. They all have a price and a maximum quantity you may purchase. Anything you purchase must be used and may not be wasted so spend wisely! Also, try to spend as little money as possible on your design so you can maximise your profits. MATERIAL COST MAXIMUM AMOUNT Egg (passenger) * Will pay you $50 for the flight $2 for 30cm 120cm ($8) Masking tape $4 for 20cm 80cm ($16) Plastic cup $3 per cup 2 cups ($6) Drinking straws 50c per straw 20 straws ($10) A4 paper $2 per sheet 2 sheets ($4) 1 egg carton cup $2 per cup 2 cups ($4) 1 sheet of paper towel $1 per piece 3 pieces ($3) Cotton balls 50c per ball (or $1 per square) 8 balls or 4 squares ($4) Bubble wrap $3 per square 2 squares ($6) DIRECTIONS: Before collecting the necessary materials, engineers spend a great deal of time thinking, planning and drawing their ideas as part of their blueprints. Use the next page to create a blueprint drawing of your idea. It is important to label all parts of your design and include a list of all the materials you used, how much of it you used, as well as an estimate of how much your device would cost to build. Remember to consider cost efficiency as well as a quality product that surrounds and protects the egg when dropped. The device that survives the fall and costs the least to build will be declared the winner!

2 INDIVIDUAL PLANNING Directions: Use the space below to plan and draw your egg drop device. Be sure to consider what forces must be overcome to successfully protect the egg from the fall without having it break. Also consider cost and use of materials. Don t be afraid to think outside the box! Explanation: Provide some support/reasons for the design choices youv e made:

3 PARTNER PLANNING Combined Ideas Now that you have a partner to work with, you need to listen to each other and share ideas. Use the space below to draw the device you both agree to construct. Complete the table of materials you think you will need and predict the total cost of your device. PRE TEST REFLECTIONS DIRECTIONS: Answer these questions with your partner before you perform your first test drop. 1. Explain the purpose of each material you used in your design (eg. how it will help to protect the egg). Material used Purpose Explain the reasoning behind how your design is supposed to work:

4 TESTING Go out and test you design After the first test drop, answer the following questions: 1. Describe what part(s) of your device worked as expected? 2. Identify at least 1 part of your device that did not work perfectly and explain why it was unsuccessful. 3. Think about the projects that were successful and describe in detail at least 2 ideas you observed that helped to protect the egg. Write down any modifications and additional materials you will need to purchase for the final egg drop.

5 CONCLUSION & SCIENTIFIC WRITE UP PURPOSE: To release an egg from a height with padding or protection, using a parachute device to slow the fall. Success will be determined by your ability to decrease the speed of the fall enough so that the egg does not break. MATERIALS: List the materials that you used in the egg drop experiment. PROCEDURE: Explain how you made the device (in order, be specific) DRAWINGS: Draw your device on graph paper as neatly as possible so that every part is seen clearly. Draw from different angles (front, side, back) OBSERVATIONS: My egg had (a successful/an unsuccessful) flight. Distance of fall = meters Time of the fall = seconds Speed = (distance traveled in metres) = m/s time CONCLUSION: 1. How much money did you spend on your final design? 2. How much profit did you make? 3. What are the forces acting on the egg as it falls? 4. For all the packages that were successful, what did they have in common? 5. The Law of Conservation of Energy states that energy cannot be created or destroyed. If this is true, then where does the kinetic energy of the egg package go? 6. What is acceleration? 7. Acceleration from gravity is always 9.8. If your egg has a mass of 60, what is the force due to gravity? (F=9.8 60) 8. Would this number, the force from gravity, change if we dropped the egg from a higher point? Why? EVALUATION: What improvements would you make if you were to build this again? (Critically think about this question. Even the best engineers can make improvements on their projects) Even if you egg drop was a success, there is always something more you could do to guarantee a safe landing.