Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 6 · 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 repeat each test is poor testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
3. 3.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) use a new load each time (d) test it only once
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.True or false: to guess, do not measure is poor testing. (a) True (b) False
8. 8.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
9. 9.True or false: to use a new load each time is good testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) load it with coins
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🔢 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
15. 15.True or false: to test it only once is poor testing. (a) True (b) False
16. 16.True or false: to use the same load is poor testing. (a) True (b) False
17. 17.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
19. 19.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
21. 21.True or false: to measure the same way is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design C (b) design A (c) design B
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
25. 25.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
26. 26.True or false: to change only one thing is poor testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 350 g, 340 g and 330 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
32. 32.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
33. 33.True or false: to use a new load each time is poor testing. (a) False (b) True
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 310 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design B (b) design A (c) design C
37. 37.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) change only one thing
38. 38.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) repeat each test
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?

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