Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 634 · 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.🧪 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 weakest? (a) design A (b) design C (c) design B
2. 2.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
3. 3.True or false: to use a new load each time is poor testing. (a) True (b) False
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
5. 5.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
6. 6.True or false: to hide a failed test is poor testing. (a) True (b) False
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
11. 11.True or false: to record every result is poor testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.True or false: to record every result is good testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 350 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to change lots at once is good testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 150 g, 60 g and 240 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) measure the same way (d) use the same load
18. 18.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) test it only once (d) use a new load each time
20. 20.True or false: to skip writing results is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 420 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.True or false: to skip writing results is poor testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) test it only once
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
32. 32.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 80 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
37. 37.True or false: to test it only once is poor testing. (a) True (b) False
38. 38.True or false: to repeat each test is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change lots at once (d) measure the same way

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