Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 491 · 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, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
2. 2.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 200 g. What is the mean (average) load it held, in grams?
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
4. 4.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.🧪 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 weakest? (a) design C (b) design A (c) design B
9. 9.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
10. 10.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
11. 11.True or false: to change lots at once is poor testing. (a) True (b) False
12. 12.True or false: to use the same load is good testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) measure the same way
14. 14.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to measure the same way is poor testing. (a) False (b) True
16. 16.True or false: to measure the same way is good testing. (a) True (b) False
17. 17.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
20. 20.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
22. 22.True or false: to guess, do not measure is good testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🔢 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
27. 27.🧪 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
28. 28.True or false: to change lots at once is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
31. 31.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) record every result (d) hide a failed test
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) hide a failed test (d) use the same load
33. 33.True or false: to record every result is good testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) skip writing results
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) repeat each test (d) use the same load
38. 38.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
39. 39.True or false: to use a new load each time is good testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design C (c) design A

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