Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 835 · 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.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
3. 3.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
5. 5.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 130 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.True or false: to guess, do not measure is good testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) record every result (d) hide a failed test
9. 9.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
10. 10.True or false: to change lots at once is good testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
13. 13.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 250 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) repeat each test
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
16. 16.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
17. 17.True or false: to hide a failed test is good testing. (a) False (b) True
18. 18.🧪 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
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
22. 22.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
25. 25.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 310 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
28. 28.🔢 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
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
31. 31.True or false: to test it only once is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) use a new load each time
33. 33.True or false: to hide a failed test is poor testing. (a) False (b) True
34. 34.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
35. 35.True or false: to use a new load each time is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A

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