Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 848 · 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 change only one thing? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) measure the same way (d) change lots at once
7. 7.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
9. 9.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 140 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to skip writing results is poor testing. (a) True (b) False
11. 11.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
12. 12.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
13. 13.True or false: to use the same load is good testing. (a) True (b) False
14. 14.True or false: to record every result is good testing. (a) False (b) True
15. 15.True or false: to use a new load each time is good testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
20. 20.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
22. 22.🧪 A paper bridge was tested three times. It held 260 g, 240 g and 280 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) guess, do not measure (d) repeat each test
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design C (b) design B (c) design A
25. 25.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
28. 28.True or false: to measure the same way is good testing. (a) False (b) True
29. 29.🔢 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
30. 30.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
31. 31.True or false: to hide a failed test is poor testing. (a) False (b) True
32. 32.🧪 A paper bridge was tested three times. It held 430 g, 330 g and 290 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) skip writing results
34. 34.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
35. 35.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
38. 38.True or false: to change only one thing is good testing. (a) False (b) True
39. 39.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) build it with straws
40. 40.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 150 g. What is the mean (average) load it held, in grams?

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