Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 748 · 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 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
2. 2.🧪 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
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) choose and draw one (d) read the challenge rules
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
6. 6.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) change only one thing (d) use the same load
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change lots at once (d) guess, do not measure
9. 9.True or false: to guess, do not measure is good testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
13. 13.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
14. 14.True or false: to use a new load each time is good testing. (a) False (b) True
15. 15.True or false: to change lots at once is good testing. (a) True (b) False
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
21. 21.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
22. 22.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change lots at once (d) repeat each test
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) guess, do not measure
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.True or false: to test it only once is good testing. (a) True (b) False
29. 29.🧪 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
30. 30.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
31. 31.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) change only one thing (d) record every result
33. 33.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
34. 34.True or false: to skip writing results is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) use a new load each time (d) skip writing results
39. 39.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?

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