Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 213 · 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 repeat each test? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 400 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to repeat each test is poor testing. (a) False (b) True
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
6. 6.True or false: to use the same load is good testing. (a) True (b) False
7. 7.True or false: to guess, do not measure is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
9. 9.True or false: to change lots at once is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
14. 14.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) load it with coins
15. 15.True or false: to change lots at once is good testing. (a) False (b) True
16. 16.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
17. 17.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 360 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to use a new load each time is good testing. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) measure the same way (d) change only one thing
21. 21.True or false: to measure the same way is poor testing. (a) False (b) True
22. 22.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) use the same load
25. 25.True or false: to repeat each test is good testing. (a) True (b) False
26. 26.True or false: to record every result is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 370 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
29. 29.🧪 A paper bridge was tested three times. It held 210 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) repeat each test (d) use the same load
32. 32.True or false: to hide a failed test is poor testing. (a) True (b) False
33. 33.🔢 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) read the challenge rules
34. 34.True or false: to skip writing results is poor testing. (a) True (b) False
35. 35.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
37. 37.True or false: to test it only once is good testing. (a) False (b) True
38. 38.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) record every result

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