Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 336 · 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 repeat each test? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) record every result
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
4. 4.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 190 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to use a new load each time is poor testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) skip writing results (d) use the same load
10. 10.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
11. 11.True or false: to use a new load each time is good testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) use the same load (d) guess, do not measure
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 380 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to change lots at once is poor testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 290 g. What is the mean (average) load it held, in grams?
19. 19.🧪 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?
20. 20.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
22. 22.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) measure the same way (d) skip writing results
24. 24.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
25. 25.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
26. 26.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) change only one thing
27. 27.🧪 A paper bridge was tested three times. It held 240 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
28. 28.🔢 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) sketch three ideas
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
31. 31.🧪 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 weakest? (a) design C (b) design B (c) design A
32. 32.True or false: to change lots at once is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) record every result (d) measure the same way

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