Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 15 · 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 change only one thing is poor testing. (a) True (b) False
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change only one thing (d) change lots at once
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
5. 5.True or false: to measure the same way is poor testing. (a) False (b) True
6. 6.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
8. 8.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) change only one thing
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
14. 14.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 110 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
16. 16.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) load it with coins
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.True or false: to measure the same way is good testing. (a) False (b) True
22. 22.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 160 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
27. 27.True or false: to hide a failed test is poor testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 250 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to use the same load is poor testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 220 g and 300 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
35. 35.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 270 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.True or false: to skip writing results is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) record every result
40. 40.True or false: to use a new load each time is poor testing. (a) False (b) True

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