Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 321 · 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) use the same load (b) record every result (c) change only one thing (d) guess, do not measure
2. 2.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
3. 3.🔢 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
4. 4.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
6. 6.🔢 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
7. 7.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change lots at once (d) test it only once
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
10. 10.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change only one thing (d) repeat each test
12. 12.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
13. 13.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
14. 14.True or false: to change lots at once is good testing. (a) True (b) False
15. 15.True or false: to test it only once is poor testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) record every result
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 70 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design B (c) design A
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
22. 22.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
23. 23.🔢 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
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.True or false: to change lots at once is poor testing. (a) False (b) True
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.True or false: to hide a failed test is poor testing. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
33. 33.True or false: to change only one thing is poor testing. (a) False (b) True
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
35. 35.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change only one thing (d) use a new load each time
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.🧪 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 B (b) design C (c) design A
40. 40.🧪 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

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