Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 283 · 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 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design C (b) design A (c) design B
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
3. 3.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) measure the same way
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change lots at once (d) change only one thing
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.True or false: to test it only once is good testing. (a) True (b) False
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) sketch three ideas
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design C (b) design B (c) design A
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.True or false: to use the same load is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change lots at once (d) measure the same way
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.True or false: to test it only once is poor testing. (a) True (b) False
17. 17.True or false: to guess, do not measure is poor testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) use a new load each time
19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
23. 23.True or false: to change lots at once is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 70 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
28. 28.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
29. 29.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
31. 31.True or false: to use a new load each time is good testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
33. 33.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to use a new load each time is poor testing. (a) False (b) True
35. 35.True or false: to use the same load is good testing. (a) True (b) False
36. 36.True or false: to repeat each test is good testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) repeat each test (d) test it only once
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) hide a failed test (d) record every result
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 300 g. What is the mean (average) load it held, in grams?

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