Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 185 · 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 “build it with straws”? (a) strengthen the weak part (b) build it with straws
2. 2.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.True or false: to change lots at once is good testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
6. 6.🔢 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
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
8. 8.True or false: to hide a failed test is good testing. (a) False (b) True
9. 9.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 400 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) use the same load (d) repeat each test
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) use the same load (d) change lots at once
13. 13.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change lots at once (d) use a new load each time
16. 16.True or false: to test it only once is poor testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change lots at once (d) change only one thing
18. 18.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
19. 19.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
20. 20.True or false: to record every result is good testing. (a) False (b) True
21. 21.True or false: to use the same load is good testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
23. 23.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
25. 25.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 180 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
28. 28.True or false: to repeat each test is poor testing. (a) True (b) False
29. 29.🧪 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 weakest? (a) design A (b) design B (c) design C
30. 30.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) build it with straws
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
33. 33.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.True or false: to guess, do not measure is poor testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
39. 39.True or false: to change only one thing is good testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins

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