Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 52 · 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.True or false: to hide a failed test is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) guess, do not measure (d) use the same load
3. 3.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) change lots at once
4. 4.True or false: to change only one thing is poor testing. (a) False (b) True
5. 5.True or false: to change lots at once is good testing. (a) False (b) True
6. 6.🧪 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
7. 7.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) build it with straws
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
11. 11.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
12. 12.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
13. 13.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change lots at once (d) measure the same way
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
15. 15.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
16. 16.True or false: to measure the same way is good testing. (a) True (b) False
17. 17.True or false: to change only one thing is good testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.True or false: to repeat each test is good testing. (a) True (b) False
21. 21.True or false: to repeat each test is poor testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 220 g and 390 g. What is the mean (average) load it held, in grams?
24. 24.🔢 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
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) hide a failed test (d) repeat each test
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) record every result (d) change only one thing
29. 29.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change only one thing (d) repeat each test
32. 32.True or false: to use the same load is good testing. (a) False (b) True
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) record every result (d) use the same load
35. 35.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) use the same load
37. 37.🧪 A paper bridge was tested three times. It held 390 g, 270 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 poor testing. (a) True (b) False
39. 39.True or false: to hide a failed test is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?

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