Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 354 · 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.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
2. 2.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) record every result (d) repeat each test
4. 4.🧪 A paper bridge was tested three times. It held 320 g, 150 g and 280 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
6. 6.True or false: to guess, do not measure is good testing. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) use the same load (d) record every result
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) measure the same way (d) record every result
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) change only one thing (d) change lots at once
14. 14.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
16. 16.True or false: to test it only once is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 260 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to skip writing results is good testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.🔢 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
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 300 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
27. 27.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) hide a failed test (d) use a new load each time
28. 28.🔢 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
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
31. 31.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
32. 32.True or false: to guess, do not measure is poor testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 350 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) load it with coins

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