Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 11 · 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 is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
2. 2.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) build it with straws
3. 3.True or false: to change only one thing is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
6. 6.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) use the same load (d) change only one thing
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) test it only once (d) guess, do not measure
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
12. 12.True or false: to change lots at once is good testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) guess, do not measure
16. 16.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
17. 17.🧪 A paper bridge was tested three times. It held 320 g, 220 g and 420 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
19. 19.True or false: to record every result is good testing. (a) False (b) True
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) repeat each test (d) record every result
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
23. 23.🧪 A paper bridge was tested three times. It held 450 g, 280 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to change only one thing is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.🔢 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
27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
28. 28.True or false: to skip writing results is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
30. 30.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
31. 31.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) read the challenge rules
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
40. 40.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) change lots at once

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