Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 569 · 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, what comes right after “load it with coins”? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
2. 2.True or false: to change only one thing is good testing. (a) True (b) False
3. 3.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
4. 4.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) record every result (d) change only one thing
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) use the same load (d) test it only once
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.True or false: to guess, do not measure is good testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) skip writing results
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) change only one thing (d) repeat each test
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
17. 17.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 370 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
19. 19.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
23. 23.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
25. 25.🧪 A paper bridge was tested three times. It held 400 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
28. 28.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) sketch three ideas
29. 29.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
30. 30.True or false: to test it only once is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
32. 32.True or false: to skip writing results is good testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 280 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) record every result (d) test it only once
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to use the same load is good testing. (a) True (b) False
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design C (b) design A (c) design B
39. 39.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change only one thing (d) hide a failed test
40. 40.🧪 A paper bridge was tested three times. It held 210 g, 180 g and 210 g. What is the mean (average) load it held, in grams?

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