Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 998 · 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 hide a failed test? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) use a new load each time
3. 3.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
4. 4.True or false: to use the same load is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
6. 6.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
8. 8.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
9. 9.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) load it with coins
10. 10.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) build it with straws
13. 13.True or false: to record every result is poor testing. (a) True (b) False
14. 14.True or false: to change only one thing is good testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) record every result (d) measure the same way
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) record every result (d) hide a failed test
17. 17.True or false: to skip writing results is poor testing. (a) False (b) True
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) hide a failed test (d) repeat each test
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
22. 22.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.True or false: to measure the same way is good testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.True or false: to test it only once is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
31. 31.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) guess, do not measure (d) record every result
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) skip writing results (d) change only one thing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design C (b) design B (c) design A
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to record every result is good testing. (a) True (b) False
36. 36.True or false: to repeat each test is good testing. (a) True (b) False
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.🧪 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 C (b) design B (c) design A
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.True or false: to change only one thing is poor testing. (a) False (b) True

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