Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 94 · 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 good testing. (a) False (b) True
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
4. 4.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
6. 6.True or false: to repeat each test is poor testing. (a) True (b) False
7. 7.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) test it only once (d) record every result
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
10. 10.True or false: to test it only once is poor testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
13. 13.True or false: to use the same load is poor testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
17. 17.True or false: to measure the same way is good testing. (a) False (b) True
18. 18.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) hide a failed test (d) change only one thing
20. 20.True or false: to use a new load each time is poor testing. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) use the same load (d) repeat each test
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) use the same load (d) change only one thing
23. 23.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
24. 24.True or false: to measure the same way is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change lots at once (d) measure the same way
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.True or false: to hide a failed test is poor testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
30. 30.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
31. 31.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 260 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
33. 33.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) use the same load (d) change only one thing
36. 36.True or false: to record every result is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws

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