Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 757 · 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.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 380 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) strengthen the weak part
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
4. 4.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) record every result (d) change lots at once
6. 6.🧪 A paper bridge was tested three times. It held 400 g, 320 g and 330 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
9. 9.🧪 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
10. 10.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
11. 11.🧪 A paper bridge was tested three times. It held 430 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) skip writing results (d) use the same load
13. 13.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
14. 14.True or false: to hide a failed test is good testing. (a) False (b) True
15. 15.True or false: to skip writing results is good testing. (a) True (b) False
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 330 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 160 g and 270 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
22. 22.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
24. 24.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
25. 25.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) test it only once
26. 26.🔢 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
27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
31. 31.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) skip writing results (d) test it only once
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) record every result
37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the strongest? (a) design B (b) design A (c) design C
39. 39.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B

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