Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 540 · 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 use the same load? (a) good testing (b) poor testing
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
4. 4.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use the same load (d) measure the same way
5. 5.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
6. 6.True or false: to record every result is good testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
8. 8.True or false: to use a new load each time is poor testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) strengthen the weak part
11. 11.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) guess, do not measure (d) skip writing results
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.True or false: to change only one thing is good testing. (a) True (b) False
15. 15.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design A (b) design C (c) design B
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) load it with coins
18. 18.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) choose and draw one
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
21. 21.🧪 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 C (b) design A (c) design B
22. 22.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) test it only once (d) repeat each test
23. 23.True or false: to use the same load is good testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 240 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use a new load each time (d) measure the same way
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
29. 29.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
30. 30.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 370 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 150 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) repeat each test (d) use a new load each time
34. 34.True or false: to change only one thing is poor testing. (a) True (b) False
35. 35.True or false: to guess, do not measure is good testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) change lots at once
37. 37.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 180 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.True or false: to hide a failed test is poor testing. (a) True (b) False

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