Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 440 · 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 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design A (b) design C (c) design B
2. 2.🧪 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 B (c) design A
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) change only one thing
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.True or false: to change only one thing is good 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.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design B (b) design A (c) design C
10. 10.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
11. 11.True or false: to change lots at once is poor testing. (a) False (b) True
12. 12.True or false: to hide a failed test is poor testing. (a) False (b) True
13. 13.🔢 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
14. 14.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
15. 15.True or false: to skip writing results is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) choose and draw one
17. 17.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
18. 18.True or false: to record every result is good testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change only one thing (d) test it only once
20. 20.🧪 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 weakest? (a) design A (b) design C (c) design B
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use the same load (d) use a new load each time
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 C (b) design B (c) design A
23. 23.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
28. 28.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
29. 29.🧪 A paper bridge was tested three times. It held 260 g, 70 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
31. 31.🧪 A paper bridge was tested three times. It held 390 g, 300 g and 330 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use a new load each time (d) test it only once
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) measure the same way (d) use the same load
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
36. 36.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
37. 37.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
38. 38.True or false: to repeat each test is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?

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