Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 72 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
2. 2.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change only one thing (d) change lots at once
6. 6.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
9. 9.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) hide a failed test (d) skip writing results
12. 12.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) use the same load
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) change lots at once (d) test it only once
21. 21.True or false: to repeat each test is poor testing. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) test it only once (d) measure the same way
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.True or false: to hide a failed test is poor testing. (a) False (b) True
26. 26.True or false: to change only one thing is good testing. (a) True (b) False
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
28. 28.🧪 A paper bridge was tested three times. It held 190 g, 50 g and 210 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) read the challenge rules
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) build it with straws
32. 32.True or false: to repeat each test is good testing. (a) False (b) True
33. 33.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
34. 34.True or false: to use a new load each time is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 180 g and 240 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster

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