Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 345 · 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.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
3. 3.True or false: to hide a failed test is good testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 310 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) repeat each test (d) skip writing results
7. 7.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change only one thing (d) test it only once
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) change lots at once
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
14. 14.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) guess, do not measure (d) change lots at once
20. 20.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
22. 22.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
23. 23.True or false: to use a new load each time is good testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 430 g, 330 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
26. 26.True or false: to change lots at once is poor testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) guess, do not measure (d) repeat each test
29. 29.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
30. 30.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
31. 31.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
33. 33.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🔢 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
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) skip writing results (d) record every result
39. 39.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
40. 40.True or false: to skip writing results is poor testing. (a) False (b) True

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