Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 951 · 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.True or false: to change lots at once is good testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 150 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to use a new load each time is good testing. (a) True (b) False
5. 5.True or false: to change lots at once is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
7. 7.True or false: to use the same load is good testing. (a) False (b) True
8. 8.True or false: to use the same load is poor testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 300 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) guess, do not measure (d) use the same load
12. 12.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
16. 16.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
17. 17.🧪 A paper bridge was tested three times. It held 160 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to test it only once is good testing. (a) False (b) True
19. 19.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
21. 21.True or false: to use a new load each time is poor testing. (a) False (b) True
22. 22.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to guess, do not measure is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) guess, do not measure (d) test it only once
28. 28.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
31. 31.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change lots at once (d) record every result
33. 33.🧪 A paper bridge was tested three times. It held 150 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.🧪 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 A (b) design C (c) design B
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

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