Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 989 · 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 guess, do not measure is good testing. (a) True (b) False
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
4. 4.True or false: to change lots at once is good testing. (a) True (b) False
5. 5.🧪 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 A (b) design C (c) design B
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
11. 11.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.True or false: to use the same load is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) guess, do not measure (d) record every result
16. 16.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
19. 19.True or false: to measure the same way is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) use a new load each time
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) repeat each test (d) use the same load
25. 25.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use a new load each time is good testing. (a) False (b) True
27. 27.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
28. 28.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
29. 29.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
30. 30.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) repeat each test (d) use the same load
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) change lots at once
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
36. 36.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
37. 37.🧪 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 B (b) design C (c) design A
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
39. 39.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) hide a failed test (d) repeat each test

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