Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 288 · 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.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 380 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to change lots at once is poor testing. (a) False (b) True
3. 3.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
4. 4.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
5. 5.True or false: to record every result is poor testing. (a) True (b) False
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
9. 9.🧪 A paper bridge was tested three times. It held 410 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
13. 13.True or false: to use the same load is poor testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to use the same load is good testing. (a) False (b) True
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) read the challenge rules
17. 17.True or false: to skip writing results is poor testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) use the same load (d) measure the same way
19. 19.🔢 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
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
23. 23.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) repeat each test (d) test it only once
24. 24.🧪 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
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) change only one thing
26. 26.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
28. 28.🧪 A paper bridge was tested three times. It held 180 g, 60 g and 210 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) guess, do not measure
30. 30.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 360 g. What is the mean (average) load it held, in grams?

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