Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 133 · 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 record every result is poor testing. (a) False (b) True
2. 2.True or false: to record every result is good testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) repeat each test (d) use the same load
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) record every result (d) change only one thing
5. 5.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change only one thing (d) repeat each test
6. 6.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
8. 8.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 270 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) load it with coins
11. 11.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
13. 13.True or false: to use a new load each time is good testing. (a) True (b) False
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design A (c) design B
15. 15.True or false: to skip writing results is good testing. (a) True (b) False
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 430 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
24. 24.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 250 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
26. 26.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
28. 28.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
29. 29.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
30. 30.True or false: to change only one thing is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
32. 32.True or false: to test it only once is poor testing. (a) False (b) True
33. 33.True or false: to use a new load each time is poor testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) record every result (d) measure the same way
35. 35.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
38. 38.True or false: to measure the same way is poor testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?

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