Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 279 · 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.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
4. 4.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
5. 5.🧪 A paper bridge was tested three times. It held 180 g, 90 g and 180 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) use the same load (d) record every result
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.True or false: to guess, do not measure is poor testing. (a) True (b) False
9. 9.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
11. 11.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) build it with straws
12. 12.True or false: to guess, do not measure is good testing. (a) False (b) True
13. 13.True or false: to test it only once is good testing. (a) False (b) True
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
15. 15.True or false: to use a new load each time is poor testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) repeat each test (d) use a new load each time
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design B (b) design A (c) design C
18. 18.True or false: to measure the same way is poor testing. (a) False (b) True
19. 19.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
20. 20.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
24. 24.True or false: to change only one thing is poor testing. (a) False (b) True
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 360 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
29. 29.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 210 g, 60 g and 210 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.🔢 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
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
36. 36.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
37. 37.True or false: to use the same load is poor testing. (a) False (b) True
38. 38.True or false: to skip writing results is good testing. (a) False (b) True
39. 39.True or false: to record every result is poor testing. (a) True (b) False
40. 40.True or false: to change lots at once is good testing. (a) True (b) False

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