Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 173 · 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 test it only once is poor testing. (a) True (b) False
2. 2.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
3. 3.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
5. 5.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) skip writing results (d) change only one thing
6. 6.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
7. 7.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
8. 8.🔢 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) sketch three ideas (d) load it with coins
9. 9.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to measure the same way is good testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) record every result (d) skip writing results
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) repeat each test (d) use the same load
13. 13.True or false: to change only one thing is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) change lots at once
15. 15.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
16. 16.True or false: to change only one thing is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 280 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) test it only once (d) change lots at once
21. 21.True or false: to hide a failed test is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
23. 23.🧪 A paper bridge was tested three times. It held 240 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to skip writing results is good testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) hide a failed test
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.True or false: to record every result is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 210 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to repeat each test is good testing. (a) True (b) False
31. 31.True or false: to hide a failed test is good testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design C (b) design B (c) design A
33. 33.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
35. 35.True or false: to use a new load each time is poor testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
39. 39.True or false: to use the same load is good testing. (a) True (b) False
40. 40.True or false: to record every result is good testing. (a) False (b) True

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