Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 681 · 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.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) record every result (d) change lots at once
3. 3.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to record every result is poor testing. (a) True (b) False
5. 5.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
6. 6.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) skip writing results (d) change only one thing
7. 7.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
8. 8.True or false: to use a new load each time is good testing. (a) False (b) True
9. 9.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design C (b) design B (c) design A
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.True or false: to change only one thing is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
14. 14.True or false: to repeat each test is good testing. (a) True (b) False
15. 15.🔢 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) load it with coins (d) choose and draw one
16. 16.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use a new load each time (d) measure the same way
17. 17.🔢 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
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
20. 20.True or false: to guess, do not measure is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 250 g, 240 g and 230 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
26. 26.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
29. 29.🧪 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 B (c) design A
30. 30.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
32. 32.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) hide a failed test
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
34. 34.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) build it with straws
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) use the same load (d) repeat each test
37. 37.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 390 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 “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
40. 40.True or false: to measure the same way is good testing. (a) True (b) False

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