Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 488 · 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 measure the same way is poor testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🧪 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 weakest? (a) design B (b) design C (c) design A
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
5. 5.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
8. 8.True or false: to guess, do not measure is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
11. 11.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
12. 12.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
14. 14.True or false: to change only one thing is poor testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) hide a failed test (d) record every result
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) hide a failed test (d) change lots at once
20. 20.True or false: to use the same load is good testing. (a) False (b) True
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) choose and draw one
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) hide a failed test (d) record every result
24. 24.True or false: to hide a failed test is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) measure the same way
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 60 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to skip writing results is poor testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
34. 34.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 160 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to record every result is good testing. (a) True (b) False
36. 36.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use the same load (d) change only one thing
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to record every result is poor testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A

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