Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 418 · 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.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) record every result
2. 2.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) skip writing results (d) change only one thing
3. 3.True or false: to use the same load is good testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use a new load each time (d) use the same load
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 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?
8. 8.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design C (b) design A (c) design B
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change lots at once (d) use a new load each time
11. 11.True or false: to change lots at once is poor testing. (a) True (b) False
12. 12.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to hide a failed test is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) skip writing results (d) test it only once
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design C (b) design B (c) design A
17. 17.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
18. 18.True or false: to guess, do not measure is poor testing. (a) False (b) True
19. 19.True or false: to skip writing results is poor testing. (a) False (b) True
20. 20.🔢 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) load it with coins
21. 21.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) use the same load (d) record every result
22. 22.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
23. 23.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
26. 26.True or false: to record every result is good testing. (a) False (b) True
27. 27.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design A (c) design C
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to change lots at once is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
32. 32.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
33. 33.🧪 A paper bridge was tested three times. It held 400 g, 280 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is good testing. (a) False (b) True
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.True or false: to change only one thing is poor testing. (a) True (b) False
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design A (b) design C (c) design B
38. 38.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
39. 39.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 270 g. What is the mean (average) load it held, in grams?

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