Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 243 · 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.True or false: to hide a failed test is poor testing. (a) False (b) True
2. 2.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change lots at once (d) change only one thing
4. 4.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
5. 5.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) change lots at once (d) use a new load each time
6. 6.True or false: to change lots at once is good testing. (a) False (b) True
7. 7.True or false: to use a new load each time is good testing. (a) True (b) False
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) test it only once
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 380 g. What is the mean (average) load it held, in grams?
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
15. 15.True or false: to use the same load is good testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
17. 17.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
18. 18.True or false: to test it only once is poor testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) load it with coins
23. 23.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 90 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.True or false: to measure the same way is good testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) build it with straws
29. 29.True or false: to record every result is poor testing. (a) False (b) True
30. 30.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
31. 31.True or false: to record every result is good testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.🧪 A paper bridge was tested three times. It held 280 g, 270 g and 290 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 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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