Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 156 · 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.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) guess, do not measure (d) repeat each test
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) skip writing results (d) record every result
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
6. 6.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 190 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
8. 8.True or false: to guess, do not measure is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
15. 15.True or false: to measure the same way is poor testing. (a) True (b) False
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design C (b) design A (c) design B
17. 17.True or false: to use a new load each time is poor testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) use a new load each time
19. 19.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
22. 22.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) use a new load each time (d) measure the same way
24. 24.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change only one thing (d) skip writing results
25. 25.True or false: to skip writing results is poor testing. (a) True (b) False
26. 26.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
27. 27.🔢 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) strengthen the weak part (d) sketch three ideas
28. 28.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
29. 29.🔢 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
30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.True or false: to repeat each test is poor testing. (a) False (b) True
33. 33.True or false: to record every result is poor testing. (a) False (b) True
34. 34.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
35. 35.🔢 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
36. 36.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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