Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 312 · 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.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
3. 3.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
4. 4.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) test it only once
5. 5.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
6. 6.True or false: to change lots at once is poor testing. (a) True (b) False
7. 7.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) use a new load each time
9. 9.🧪 Is it good or poor testing to measure the same way? (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) build it with straws (b) strengthen the weak part
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) build it with straws
12. 12.True or false: to change only one thing is good testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
14. 14.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) repeat each test (d) change only one thing
15. 15.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
16. 16.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
17. 17.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) hide a failed test (d) change only one thing
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) use the same load
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) use the same load
21. 21.🧪 A paper bridge was tested three times. It held 290 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to hide a failed test is good testing. (a) True (b) False
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
25. 25.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
26. 26.🧪 A paper bridge was tested three times. It held 170 g, 70 g and 270 g. What is the mean (average) load it held, in grams?
27. 27.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) use a new load each time
29. 29.True or false: to test it only once is poor testing. (a) False (b) True
30. 30.True or false: to repeat each test is poor testing. (a) True (b) False
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
34. 34.🧪 A paper bridge was tested three times. It held 230 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
37. 37.True or false: to change lots at once is good testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 380 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
40. 40.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing

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