Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 527 · 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 only one thing? (a) poor testing (b) good testing
2. 2.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
3. 3.True or false: to guess, do not measure is good testing. (a) True (b) False
4. 4.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
5. 5.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
6. 6.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
8. 8.True or false: to change only one thing is poor testing. (a) True (b) False
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design C (b) design B (c) design A
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
11. 11.True or false: to change only one thing is good testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change only one thing (d) use a new load each time
13. 13.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) repeat each test (d) test it only once
15. 15.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
17. 17.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 270 g and 260 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) record every result (d) test it only once
20. 20.🧪 A paper bridge was tested three times. It held 160 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 100 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) use the same load (d) change only one thing
27. 27.True or false: to change lots at once is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
30. 30.🔢 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
31. 31.True or false: to hide a failed test is good testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) read the challenge rules
34. 34.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) build it with straws
35. 35.🧪 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 strongest? (a) design C (b) design A (c) design B
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
40. 40.True or false: to skip writing results is good testing. (a) False (b) True

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