Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 609 · 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 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) measure the same way
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
6. 6.True or false: to use the same load is good testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 380 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
10. 10.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
13. 13.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) guess, do not measure (d) record every result
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.True or false: to measure the same way is good testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) record every result
20. 20.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) use the same load
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
25. 25.🧪 A paper bridge was tested three times. It held 420 g, 260 g and 370 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) change only one thing (d) use the same load
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) test it only once (d) use the same load
28. 28.True or false: to repeat each test is poor testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
31. 31.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
32. 32.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
33. 33.True or false: to change lots at once is good testing. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change lots at once (d) use a new load each time
35. 35.True or false: to change only one thing is poor testing. (a) True (b) False
36. 36.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
37. 37.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
39. 39.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 120 g. What is the mean (average) load it held, in grams?

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