Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 2 · 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.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) repeat each test (d) skip writing results
3. 3.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
4. 4.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use a new load each time (d) change only one thing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) measure the same way (d) use the same load
7. 7.True or false: to change lots at once is poor testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) use the same load (d) record every result
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) record every result (d) use a new load each time
10. 10.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
11. 11.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
12. 12.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
14. 14.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
15. 15.True or false: to hide a failed test is good testing. (a) True (b) False
16. 16.True or false: to use the same load is good testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to skip writing results is poor testing. (a) False (b) True
19. 19.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
20. 20.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.True or false: to test it only once is poor testing. (a) True (b) False
23. 23.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
24. 24.True or false: to skip writing results is good testing. (a) True (b) False
25. 25.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) use the same load
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) hide a failed test (d) measure the same way
29. 29.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
30. 30.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
32. 32.True or false: to hide a failed test is poor testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
34. 34.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
35. 35.True or false: to use a new load each time is poor testing. (a) False (b) True
36. 36.True or false: to guess, do not measure is good testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
40. 40.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing

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