Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 878 · 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: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
5. 5.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 360 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) skip writing results
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
14. 14.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
15. 15.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 240 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to repeat each test is good testing. (a) True (b) False
18. 18.True or false: to use the same load is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to skip writing results is good testing. (a) False (b) True
22. 22.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) repeat each test (d) test it only once
24. 24.🔢 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
25. 25.🧪 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 weakest? (a) design A (b) design B (c) design C
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) guess, do not measure (d) change only one thing
27. 27.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
28. 28.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 150 g. What is the mean (average) load it held, in grams?
29. 29.🔢 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
30. 30.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
32. 32.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.True or false: to repeat each test is poor testing. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) test it only once (d) guess, do not measure
36. 36.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) load it with coins
37. 37.True or false: to change lots at once is good testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) test it only once (d) change only one thing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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