Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 965 · 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.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the strongest? (a) design C (b) design A (c) design B
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) change only one thing
4. 4.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
8. 8.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
11. 11.True or false: to hide a failed test is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
16. 16.True or false: to change only one thing is good testing. (a) False (b) True
17. 17.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
19. 19.True or false: to test it only once is good testing. (a) True (b) False
20. 20.True or false: to change lots at once is poor testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.True or false: to skip writing results is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.True or false: to hide a failed test is poor testing. (a) True (b) False
28. 28.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
29. 29.🧪 A paper bridge was tested three times. It held 200 g, 70 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 370 g, 340 g and 340 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.True or false: to change lots at once is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 240 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to skip writing results is good testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to measure the same way is good testing. (a) True (b) False
37. 37.True or false: to record every result is good testing. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) repeat each test (d) test it only once
39. 39.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
40. 40.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing

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