Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 797 · 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 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
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 FIRST step? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B
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.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) load it with coins
9. 9.True or false: to use a new load each time is poor testing. (a) True (b) False
10. 10.True or false: to guess, do not measure is good testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) skip writing results
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
14. 14.True or false: to test it only once is good testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
16. 16.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) use the same load (d) use a new load each time
18. 18.True or false: to use a new load each time is good testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.True or false: to repeat each test is good testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change lots at once (d) test it only once
22. 22.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
24. 24.True or false: to change only one thing is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
27. 27.True or false: to change lots at once is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
30. 30.True or false: to use the same load is good testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 190 g, 60 g and 230 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
33. 33.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
35. 35.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 80 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to repeat each test is poor testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) repeat each test
38. 38.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
39. 39.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design A (b) design C (c) design B

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