Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 84 · 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) guess, do not measure (b) use a new load each time (c) test it only once (d) record every result
2. 2.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
3. 3.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 350 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
5. 5.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
6. 6.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) skip writing results (d) hide a failed test
10. 10.True or false: to record every result is poor testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
12. 12.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.True or false: to change lots at once is good testing. (a) False (b) True
15. 15.True or false: to use the same load is poor testing. (a) False (b) True
16. 16.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 370 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 260 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
23. 23.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
25. 25.True or false: to guess, do not measure is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
27. 27.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) use the same load
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
32. 32.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
33. 33.True or false: to test it only once is good testing. (a) False (b) True
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
35. 35.🧪 A paper bridge was tested three times. It held 180 g, 70 g and 200 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to measure the same way is good testing. (a) False (b) True
40. 40.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room

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