Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 373 · 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.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
2. 2.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 110 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) record every result (d) change only one thing
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.True or false: to use a new load each time is good testing. (a) False (b) True
7. 7.True or false: to guess, do not measure is good testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) change lots at once
11. 11.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
12. 12.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
13. 13.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
15. 15.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
18. 18.True or false: to repeat each test is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
20. 20.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) use a new load each time (d) change only one thing
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) skip writing results
22. 22.True or false: to guess, do not measure is poor testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
25. 25.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 320 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 200 g, 70 g and 210 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to hide a failed test is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
29. 29.True or false: to skip writing results is poor testing. (a) False (b) True
30. 30.True or false: to use a new load each time is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.True or false: to record every result is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) repeat each test
34. 34.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) record every result (d) measure the same way
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
38. 38.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
39. 39.True or false: to change only one thing is poor testing. (a) False (b) True
40. 40.True or false: to skip writing results is good testing. (a) True (b) False

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