Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 16 · 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 good testing. (a) True (b) False
2. 2.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) repeat each test (d) change only one thing
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) hide a failed test (d) change only one thing
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
6. 6.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
10. 10.True or false: to record every result is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) record every result (d) change only one thing
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) test it only once
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) guess, do not measure
15. 15.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) test it only once (d) repeat each test
20. 20.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) hide a failed test
21. 21.True or false: to use the same load is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
24. 24.🧪 A paper bridge was tested three times. It held 400 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
30. 30.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
31. 31.True or false: to test it only once is poor testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
33. 33.🔢 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
34. 34.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use a new load each time (d) hide a failed test
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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