Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 27 · 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.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
2. 2.True or false: to test it only once is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
6. 6.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
7. 7.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
9. 9.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 110 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
11. 11.True or false: to hide a failed test is good testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) skip writing results
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.True or false: to skip writing results is poor testing. (a) False (b) True
15. 15.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
16. 16.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 320 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to test it only once is good testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
21. 21.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) record every result (d) repeat each test
22. 22.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to repeat each test is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) read the challenge rules
27. 27.True or false: to skip writing results is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.True or false: to measure the same way is good testing. (a) False (b) True
31. 31.True or false: to guess, do not measure is poor testing. (a) False (b) True
32. 32.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) change lots at once
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 260 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to use a new load each time is good testing. (a) True (b) False

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