Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 290 · 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.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 300 g. What is the mean (average) load it held, in grams?
2. 2.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 380 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
5. 5.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
6. 6.True or false: to change lots at once is good testing. (a) False (b) True
7. 7.True or false: to repeat each test is poor testing. (a) False (b) True
8. 8.True or false: to use a new load each time is poor testing. (a) False (b) True
9. 9.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
12. 12.True or false: to record every result is good testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) measure the same way (d) skip writing results
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
15. 15.🧪 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
16. 16.True or false: to hide a failed test is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use a new load each time (d) record every result
18. 18.🧪 A paper bridge was tested three times. It held 150 g, 50 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 160 g, 60 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
23. 23.True or false: to measure the same way is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.🧪 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 A (b) design B (c) design C
26. 26.True or false: to guess, do not measure is poor testing. (a) False (b) True
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
28. 28.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
29. 29.True or false: to measure the same way is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to change only one thing is poor testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) measure the same way
34. 34.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
35. 35.True or false: to guess, do not measure is good testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) change only one thing (d) guess, do not measure
37. 37.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
38. 38.🧪 A paper bridge was tested three times. It held 300 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?

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