Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 732 · 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.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
3. 3.🧪 A paper bridge was tested three times. It held 350 g, 320 g and 290 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to use a new load each time is poor testing. (a) True (b) False
5. 5.True or false: to record every result is good testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change only one thing (d) hide a failed test
9. 9.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
10. 10.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use the same load (d) use a new load each time
12. 12.True or false: to measure the same way is poor testing. (a) False (b) True
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design A (b) design B (c) design C
16. 16.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 210 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
18. 18.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) change lots at once
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 160 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to skip writing results is poor testing. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use a new load each time (d) record every result
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) test it only once
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 90 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.True or false: to use a new load each time is good testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
31. 31.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 260 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.True or false: to change lots at once is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) build it with straws
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design A (b) design B (c) design C

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