Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 145 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design A (b) design B (c) design C
2. 2.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
4. 4.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
5. 5.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
6. 6.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) change only one thing (d) skip writing results
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use the same load (d) guess, do not measure
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design C (c) design A
12. 12.🧪 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
13. 13.True or false: to guess, do not measure is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) skip writing results
15. 15.True or false: to record every result is good testing. (a) True (b) False
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.True or false: to test it only once is good testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
19. 19.True or false: to hide a failed test is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
23. 23.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
24. 24.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 110 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
26. 26.True or false: to change lots at once is poor testing. (a) True (b) False
27. 27.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
30. 30.🧪 A paper bridge was tested three times. It held 170 g, 100 g and 210 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
32. 32.True or false: to change only one thing is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
35. 35.True or false: to test it only once is poor testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 170 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 380 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) use the same load (d) repeat each test

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