Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 307 · 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.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
2. 2.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
5. 5.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change lots at once (d) record every result
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) hide a failed test (d) use a new load each time
8. 8.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) record every result (d) change only one thing
10. 10.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
11. 11.True or false: to guess, do not measure is poor testing. (a) True (b) False
12. 12.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
16. 16.True or false: to repeat each test is good testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
20. 20.🔢 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
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) measure the same way
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 220 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to hide a failed test is poor testing. (a) False (b) True
25. 25.True or false: to record every result is poor testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) record every result (d) change only one thing
29. 29.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
30. 30.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
31. 31.True or false: to change only one thing is good testing. (a) False (b) True
32. 32.True or false: to record every result is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 360 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) build it with straws
35. 35.True or false: to change lots at once is poor testing. (a) False (b) True
36. 36.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 260 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) repeat each test (d) change lots at once
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing

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