Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 979 · 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: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
2. 2.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to repeat each test is poor testing. (a) True (b) False
5. 5.True or false: to measure the same way is poor testing. (a) True (b) False
6. 6.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
8. 8.True or false: to hide a failed test is poor testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
12. 12.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
13. 13.True or false: to change lots at once is poor testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) guess, do not measure (d) skip writing results
16. 16.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) test it only once
19. 19.True or false: to guess, do not measure is good testing. (a) True (b) False
20. 20.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) repeat each test (d) guess, do not measure
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
23. 23.True or false: to guess, do not measure is poor testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
27. 27.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
28. 28.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
30. 30.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) use a new load each time (d) guess, do not measure
32. 32.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) choose and draw one
34. 34.True or false: to skip writing results is poor testing. (a) True (b) False
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use the same load (d) repeat each test
38. 38.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) guess, do not measure (d) measure the same way
40. 40.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 240 g. What is the mean (average) load it held, in grams?

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