Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 687 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) guess, do not measure (d) change only one thing
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) skip writing results (d) use a new load each time
6. 6.🧪 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 strongest? (a) design A (b) design C (c) design B
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
8. 8.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
12. 12.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
14. 14.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
15. 15.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
20. 20.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.True or false: to guess, do not measure is good testing. (a) True (b) False
23. 23.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 90 g. What is the mean (average) load it held, in grams?
27. 27.🧪 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
28. 28.True or false: to change only one thing is poor testing. (a) True (b) False
29. 29.🧪 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 B (b) design C (c) design A
30. 30.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
31. 31.True or false: to use a new load each time is good testing. (a) False (b) True
32. 32.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 290 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to change lots at once is poor testing. (a) False (b) True
34. 34.True or false: to use the same load is poor testing. (a) True (b) False
35. 35.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
36. 36.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) repeat each test (d) measure the same way
37. 37.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to test it only once is poor testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) hide a failed test (d) use a new load each time
40. 40.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing

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