Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 638 · 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 change lots at once? (a) poor testing (b) good testing
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) load it with coins
3. 3.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 290 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
5. 5.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
6. 6.True or false: to hide a failed test is good testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
9. 9.True or false: to skip writing results is poor testing. (a) True (b) False
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
12. 12.True or false: to skip writing results is good testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) measure the same way (d) record every result
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design A (b) design C (c) design B
15. 15.True or false: to measure the same way is good testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) repeat each test (d) change lots at once
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
18. 18.True or false: to record every result is good testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design C (b) design B (c) design A
21. 21.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 410 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) guess, do not measure (d) change only one thing
26. 26.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
29. 29.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
31. 31.True or false: to use a new load each time is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) use the same load (d) guess, do not measure
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.True or false: to test it only once is poor testing. (a) False (b) True
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
36. 36.True or false: to record every result is poor testing. (a) False (b) True
37. 37.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) use a new load each time
39. 39.True or false: to measure the same way is poor testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) record every result (d) use a new load each time

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