Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 595 · 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 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
5. 5.🧪 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 strongest? (a) design B (b) design C (c) design A
6. 6.🔢 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) read the challenge rules (d) choose and draw one
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) measure the same way
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
9. 9.True or false: to use a new load each time is poor testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 100 g. What is the mean (average) load it held, in grams?
11. 11.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
12. 12.True or false: to record every result is poor testing. (a) False (b) True
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) skip writing results (d) repeat each test
15. 15.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) test it only once (d) skip writing results
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
17. 17.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
18. 18.True or false: to change lots at once is good testing. (a) True (b) False
19. 19.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
26. 26.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part
30. 30.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.True or false: to test it only once is good testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) record every result
35. 35.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.True or false: to repeat each test is good testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing

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