Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 654 · 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 guess, do not measure is good testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) measure the same way
3. 3.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
5. 5.True or false: to test it only once is poor testing. (a) False (b) True
6. 6.True or false: to use a new load each time is poor testing. (a) False (b) True
7. 7.True or false: to change lots at once is good testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 90 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
10. 10.True or false: to hide a failed test is good testing. (a) False (b) True
11. 11.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
12. 12.True or false: to repeat each test is poor testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) choose and draw one
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) measure the same way (d) test it only once
15. 15.🧪 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
16. 16.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
17. 17.True or false: to skip writing results is good testing. (a) True (b) False
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
19. 19.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
21. 21.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
22. 22.True or false: to change only one thing is poor testing. (a) False (b) True
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design C (b) design B (c) design A
24. 24.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
28. 28.True or false: to hide a failed test is poor testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design C (b) design B (c) design A
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to use the same load is poor testing. (a) False (b) True
33. 33.True or false: to change only one thing is good testing. (a) False (b) True
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) hide a failed test
37. 37.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
38. 38.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) measure the same way (d) repeat each test
40. 40.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 280 g. What is the mean (average) load it held, in grams?

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