Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 872 · 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 change lots at once is poor testing. (a) False (b) True
2. 2.True or false: to test it only once is poor testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 190 g, 100 g and 280 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) hide a failed test (d) use the same load
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) use a new load each time
12. 12.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) test it only once (d) change lots at once
14. 14.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
15. 15.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
17. 17.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.True or false: to change only one thing is poor testing. (a) True (b) False
20. 20.True or false: to record every result is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 170 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.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) record every result (d) repeat each test
24. 24.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use the same load (d) hide a failed test
26. 26.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
28. 28.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 360 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to repeat each test is good testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
31. 31.True or false: to use a new load each time is good testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 140 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 250 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) choose and draw one

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