Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 814 · 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.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
6. 6.True or false: to record every result is poor testing. (a) True (b) False
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design C (b) design B (c) design A
8. 8.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
9. 9.🧪 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 A (b) design B (c) design C
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
11. 11.True or false: to skip writing results is good testing. (a) True (b) False
12. 12.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
15. 15.🔢 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
16. 16.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
17. 17.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) build it with straws
20. 20.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
21. 21.True or false: to measure the same way is good testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change only one thing (d) record every result
23. 23.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) guess, do not measure (d) test it only once
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🧪 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 weakest? (a) design C (b) design A (c) design B
26. 26.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
27. 27.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 180 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
33. 33.True or false: to repeat each test is poor testing. (a) False (b) True
34. 34.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.True or false: to hide a failed test is poor testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) guess, do not measure (d) test it only once
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.True or false: to test it only once is good testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part

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