Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 457 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
2. 2.🧪 A paper bridge was tested three times. It held 430 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
3. 3.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 120 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) use the same load (d) repeat each test
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
6. 6.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
10. 10.True or false: to skip writing results is good testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A
14. 14.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) hide a failed test
15. 15.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
16. 16.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 160 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) build it with straws
18. 18.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
20. 20.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
21. 21.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
23. 23.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
24. 24.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) change only one thing (d) measure the same way
26. 26.🧪 A paper bridge was tested three times. It held 400 g, 330 g and 260 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
29. 29.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) measure the same way
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) skip writing results (d) use the same load
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) skip writing results (d) record every result
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
39. 39.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
40. 40.True or false: to hide a failed test is good testing. (a) False (b) True

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