Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 241 · 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, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
2. 2.True or false: to record every result is poor testing. (a) True (b) False
3. 3.🔢 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
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
5. 5.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 350 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
7. 7.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) build it with straws
9. 9.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
10. 10.True or false: to skip writing results is good testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) record every result (d) repeat each test
13. 13.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) measure the same way (d) record every result
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) hide a failed test (d) guess, do not measure
15. 15.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.True or false: to hide a failed test is poor testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) repeat each test
21. 21.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
22. 22.🧪 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
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) sketch three ideas
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to repeat each test is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) use the same load (d) record every result
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) guess, do not measure (d) skip writing results
35. 35.True or false: to guess, do not measure is poor testing. (a) False (b) True
36. 36.True or false: to skip writing results is poor testing. (a) False (b) True
37. 37.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) use a new load each time
39. 39.True or false: to measure the same way is poor testing. (a) True (b) False
40. 40.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?

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