Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 479 · 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.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) skip writing results
2. 2.True or false: to hide a failed test is good testing. (a) False (b) True
3. 3.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
5. 5.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
7. 7.True or false: to repeat each test is good testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) record every result (d) repeat each test
10. 10.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.True or false: to use a new load each time is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) record every result
15. 15.True or false: to test it only once is good testing. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) repeat each test
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) use a new load each time
23. 23.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change lots at once (d) guess, do not measure
25. 25.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
27. 27.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
28. 28.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
29. 29.True or false: to record every result is poor testing. (a) True (b) False
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to change only one thing is poor testing. (a) True (b) False
32. 32.True or false: to change lots at once is good testing. (a) False (b) True
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
36. 36.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to test it only once is poor testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
39. 39.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
40. 40.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 180 g. What is the mean (average) load it held, in grams?

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