Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 528 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
3. 3.True or false: to change lots at once is good testing. (a) False (b) True
4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design A (b) design B (c) design C
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) sketch three ideas
8. 8.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
9. 9.True or false: to change only one thing is good testing. (a) True (b) False
10. 10.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
13. 13.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) change only one thing (d) record every result
14. 14.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
15. 15.🧪 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
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
17. 17.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
18. 18.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 290 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) hide a failed test (d) change lots at once
21. 21.True or false: to measure the same way is good testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
23. 23.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
24. 24.True or false: to use a new load each time is good testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) test it only once
26. 26.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) build it with straws
29. 29.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) record every result (d) repeat each test
31. 31.True or false: to repeat each test is good testing. (a) True (b) False
32. 32.True or false: to hide a failed test is poor testing. (a) False (b) True
33. 33.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
35. 35.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) hide a failed test (d) measure the same way
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 160 g. What is the mean (average) load it held, in grams?

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