Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 325 · 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.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
3. 3.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) change lots at once
4. 4.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
6. 6.True or false: to repeat each test is poor testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) change only one thing
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
11. 11.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 110 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
13. 13.🔢 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) load it with coins
14. 14.True or false: to measure the same way is good testing. (a) False (b) True
15. 15.True or false: to change lots at once is poor testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) choose and draw one
19. 19.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
20. 20.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
21. 21.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
22. 22.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
23. 23.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
24. 24.🧪 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?
25. 25.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change only one thing (d) change lots at once
26. 26.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
27. 27.True or false: to change lots at once is good testing. (a) False (b) True
28. 28.True or false: to record every result is poor testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 130 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 270 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to change only one thing is poor testing. (a) False (b) True
33. 33.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
34. 34.True or false: to skip writing results is poor testing. (a) True (b) False
35. 35.True or false: to use the same load is good testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) hide a failed test (d) measure the same way
37. 37.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 390 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C

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