Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 991 · 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.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) use the same load
2. 2.True or false: to hide a failed test is poor testing. (a) False (b) True
3. 3.🧪 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 C (b) design B (c) design A
4. 4.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) repeat each test (d) measure the same way
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 260 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) use a new load each time (d) measure the same way
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
11. 11.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
12. 12.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use a new load each time (d) change lots at once
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
15. 15.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
16. 16.True or false: to skip writing results is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
19. 19.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 370 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) repeat each test (d) change only one thing
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
23. 23.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
25. 25.True or false: to change only one thing is poor testing. (a) True (b) False
26. 26.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
27. 27.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) hide a failed test (d) guess, do not measure
29. 29.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
30. 30.True or false: to test it only once is good testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 160 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to measure the same way is good testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to guess, do not measure is good testing. (a) False (b) True
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 290 g, 130 g and 270 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
39. 39.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
40. 40.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?

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