Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 443 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design C (b) design A (c) design B
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
5. 5.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) record every result (d) use the same load
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) repeat each test (d) use a new load each time
7. 7.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
8. 8.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) build it with straws (d) read the challenge rules
11. 11.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.True or false: to use the same load is poor testing. (a) True (b) False
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
15. 15.True or false: to guess, do not measure is poor testing. (a) False (b) True
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.True or false: to use a new load each time is poor testing. (a) False (b) True
18. 18.True or false: to use a new load each time is good testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
23. 23.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) test it only once
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 370 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 390 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) guess, do not measure (d) record every result
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change lots at once (d) change only one thing
30. 30.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
31. 31.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
33. 33.True or false: to use the same load is good testing. (a) False (b) True
34. 34.True or false: to test it only once is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change lots at once (d) measure the same way
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?

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