Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 547 · 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.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) record every result
3. 3.True or false: to measure the same way is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.True or false: to guess, do not measure is good testing. (a) False (b) True
6. 6.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
7. 7.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
9. 9.True or false: to hide a failed test is good testing. (a) False (b) True
10. 10.🧪 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
11. 11.🔢 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) read the challenge rules
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) use the same load
14. 14.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) choose and draw one
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 110 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 280 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
20. 20.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 80 g. What is the mean (average) load it held, in grams?
21. 21.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
23. 23.🔢 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
24. 24.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 350 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) repeat each test (d) change only one thing
26. 26.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
27. 27.🧪 A paper bridge was tested three times. It held 290 g, 100 g and 180 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) choose and draw one
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
32. 32.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 410 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) hide a failed test (d) change lots at once
35. 35.True or false: to test it only once is good testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 430 g, 300 g and 260 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) True (b) False
38. 38.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
39. 39.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws

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