Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 730 · 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.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
2. 2.True or false: to change lots at once is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) record every result (d) measure the same way
7. 7.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) use a new load each time
8. 8.🔢 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
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) measure the same way
11. 11.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
12. 12.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.True or false: to repeat each test is poor testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) hide a failed test
16. 16.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) change lots at once (d) test it only once
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) choose and draw one
18. 18.🧪 A paper bridge was tested three times. It held 420 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to guess, do not measure is poor testing. (a) False (b) True
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 340 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.True or false: to repeat each test is good testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 70 g and 160 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
29. 29.True or false: to measure the same way is good testing. (a) False (b) True
30. 30.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
31. 31.🧪 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?
32. 32.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the strongest? (a) design C (b) design A (c) design B
35. 35.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 300 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to use the same load is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 400 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
39. 39.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
40. 40.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?

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