Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 384 · 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 change only one thing is poor testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use the same load (d) hide a failed test
4. 4.True or false: to use a new load each time is good testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design B (b) design C (c) design A
9. 9.True or false: to test it only once is good testing. (a) False (b) True
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) repeat each test (d) guess, do not measure
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
14. 14.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
15. 15.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design A (c) design B
18. 18.True or false: to measure the same way is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 250 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.True or false: to test it only once is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to record every result is poor testing. (a) True (b) False
30. 30.True or false: to guess, do not measure is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) measure the same way (d) skip writing results
32. 32.True or false: to skip writing results is good testing. (a) True (b) False
33. 33.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 320 g and 280 g. What is the mean (average) load it held, in grams?
35. 35.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
38. 38.True or false: to hide a failed test is good testing. (a) True (b) False
39. 39.True or false: to use the same load is poor testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing

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