Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 129 · 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.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
2. 2.True or false: to measure the same way is good testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) use the same load (d) change only one thing
6. 6.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
8. 8.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 330 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to test it only once is poor testing. (a) False (b) True
10. 10.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
12. 12.True or false: to test it only once is good testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) measure the same way
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) use a new load each time (d) measure the same way
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
16. 16.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 300 g. What is the mean (average) load it held, in grams?
17. 17.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
18. 18.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
19. 19.True or false: to skip writing results is poor testing. (a) False (b) True
20. 20.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
22. 22.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to change lots at once is good testing. (a) True (b) False
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 310 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to hide a failed test is good testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
30. 30.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) record every result
32. 32.True or false: to skip writing results is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change lots at once (d) guess, do not measure
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.True or false: to record every result is poor testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 90 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) skip writing results
38. 38.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 160 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) test it only once (b) change only one thing (c) hide a failed test (d) guess, do not measure

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