Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 337 · 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 use the same load is poor testing. (a) True (b) False
2. 2.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) change lots at once (d) guess, do not measure
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
7. 7.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) skip writing results (d) change lots at once
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
9. 9.True or false: to change lots at once is good testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
11. 11.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
13. 13.True or false: to measure the same way is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 360 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) guess, do not measure (d) skip writing results
16. 16.True or false: to record every result is good testing. (a) False (b) True
17. 17.True or false: to repeat each test is poor testing. (a) True (b) False
18. 18.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) guess, do not measure
22. 22.🔢 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
23. 23.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
24. 24.True or false: to test it only once is poor testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.True or false: to repeat each test is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
28. 28.🧪 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 weakest? (a) design B (b) design C (c) design A
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
30. 30.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
31. 31.True or false: to change only one thing is good testing. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) choose and draw one
33. 33.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.True or false: to change lots at once is poor testing. (a) False (b) True
36. 36.True or false: to use the same load is good testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) measure the same way (d) skip writing results
38. 38.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
39. 39.🧪 A paper bridge was tested three times. It held 170 g, 140 g and 140 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A

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