Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 137 · 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 230 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
2. 2.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
3. 3.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
5. 5.True or false: to measure the same way is poor testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) change lots at once
9. 9.True or false: to use a new load each time is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
15. 15.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) load it with coins
16. 16.True or false: to use the same load is poor testing. (a) True (b) False
17. 17.True or false: to test it only once is poor testing. (a) True (b) False
18. 18.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) hide a failed test
21. 21.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
22. 22.True or false: to skip writing results is good testing. (a) True (b) False
23. 23.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) test it only once
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) skip writing results
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C
27. 27.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
28. 28.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 400 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) guess, do not measure (d) hide a failed test
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) guess, do not measure
33. 33.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
36. 36.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change lots at once (d) guess, do not measure
38. 38.True or false: to change only one thing is good testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing

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