Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 560 · 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 use the same load is poor testing. (a) False (b) True
2. 2.True or false: to skip writing results is poor testing. (a) False (b) True
3. 3.🧪 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 weakest? (a) design C (b) design A (c) design B
4. 4.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to use a new load each time is good testing. (a) True (b) False
6. 6.True or false: to record every result is poor testing. (a) True (b) False
7. 7.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
8. 8.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) hide a failed test (d) guess, do not measure
10. 10.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) use the same load
11. 11.🧪 A paper bridge was tested three times. It held 390 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) hide a failed test (d) test it only once
14. 14.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
15. 15.True or false: to use the same load is good testing. (a) False (b) True
16. 16.True or false: to change only one thing is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 300 g, 290 g and 280 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
22. 22.True or false: to record every result is good testing. (a) False (b) True
23. 23.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
29. 29.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) repeat each test
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
32. 32.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) load it with coins
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design B (b) design A (c) design C
35. 35.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) measure the same way (d) change only one thing
36. 36.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
38. 38.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
40. 40.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing

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