Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 597 · 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 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
2. 2.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) use the same load
4. 4.🧪 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 B (c) design A
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use the same load (d) skip writing results
6. 6.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
8. 8.True or false: to use the same load is good testing. (a) False (b) True
9. 9.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
11. 11.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
12. 12.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
13. 13.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 350 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to record every result is poor testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
16. 16.True or false: to repeat each test is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) test it only once
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.True or false: to guess, do not measure is good testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
22. 22.True or false: to skip writing results is poor testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 340 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 450 g, 340 g and 260 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) record every result (d) skip writing results
26. 26.True or false: to skip writing results is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) test it only once (d) measure the same way
28. 28.True or false: to repeat each test is good testing. (a) False (b) True
29. 29.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) hide a failed test (d) test it only once
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to change only one thing is good testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
39. 39.True or false: to change lots at once is poor testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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