Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 324 · 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 test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
2. 2.True or false: to repeat each test is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
6. 6.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to change only one thing is good testing. (a) True (b) False
8. 8.🧪 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
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
12. 12.True or false: to skip writing results is poor testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 430 g, 240 g and 350 g. What is the mean (average) load it held, in grams?
14. 14.🧪 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 B (b) design C (c) design A
15. 15.🧪 A paper bridge was tested three times. It held 400 g, 300 g and 230 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 360 g, 190 g and 260 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) skip writing results
20. 20.True or false: to hide a failed test is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
23. 23.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) record every result (d) test it only once
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) skip writing results (d) repeat each test
27. 27.🔢 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
28. 28.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 110 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 240 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
32. 32.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
34. 34.True or false: to use the same load is poor testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design C (c) design B
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.True or false: to hide a failed test is good testing. (a) True (b) False
39. 39.True or false: to change lots at once is good testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) guess, do not measure (d) skip writing results

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