Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 88 · 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 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
2. 2.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
6. 6.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) change only one thing (d) test it only once
8. 8.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
10. 10.True or false: to change lots at once is poor testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.True or false: to use a new load each time is good testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) repeat each test (d) use the same load
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
15. 15.🧪 A paper bridge was tested three times. It held 170 g, 130 g and 150 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) hide a failed test
20. 20.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
22. 22.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
23. 23.True or false: to change lots at once is good testing. (a) True (b) False
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) hide a failed test (d) test it only once
30. 30.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
31. 31.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
32. 32.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) skip writing results (d) change only one thing
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) repeat each test (d) measure the same way
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
35. 35.True or false: to measure the same way is good testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
37. 37.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
38. 38.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) use a new load each time
40. 40.🧪 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?

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