Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 755 · 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.True or false: to change only one thing is good testing. (a) False (b) True
2. 2.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use a new load each time (d) repeat each test
4. 4.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.True or false: to use a new load each time is good testing. (a) True (b) False
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) measure the same way
11. 11.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
13. 13.🧪 A paper bridge was tested three times. It held 420 g, 260 g and 370 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 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
16. 16.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
17. 17.True or false: to record every result is poor testing. (a) False (b) True
18. 18.🧪 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 C (b) design A (c) design B
19. 19.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
20. 20.True or false: to hide a failed test is good testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) measure the same way (d) use the same load
22. 22.True or false: to use the same load is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use a new load each time (d) hide a failed test
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) skip writing results (d) test it only once
25. 25.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
26. 26.True or false: to change lots at once is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) sketch three ideas
28. 28.True or false: to use a new load each time is poor testing. (a) True (b) False
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 300 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) change lots at once (d) use the same load
32. 32.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
34. 34.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
35. 35.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
36. 36.True or false: to record every result is good testing. (a) True (b) False
37. 37.🔢 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) load it with coins
38. 38.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
39. 39.True or false: to guess, do not measure is good testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 320 g. What is the mean (average) load it held, in grams?

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