Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 385 · 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.True or false: to skip writing results is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use a new load each time (d) measure the same way
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
5. 5.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
8. 8.🔢 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) strengthen the weak part
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
12. 12.True or false: to test it only once is good testing. (a) False (b) True
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
14. 14.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 260 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) skip writing results (d) record every result
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
19. 19.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
21. 21.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 370 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design C (b) design B (c) design A
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
25. 25.True or false: to use the same load is poor testing. (a) True (b) False
26. 26.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
27. 27.True or false: to repeat each test is good testing. (a) False (b) True
28. 28.True or false: to change only one thing is good testing. (a) False (b) True
29. 29.True or false: to guess, do not measure is good testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
32. 32.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) change lots at once
33. 33.True or false: to repeat each test is poor testing. (a) False (b) True
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design A (c) design B
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 430 g, 280 g and 280 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) change only one thing

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