Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 414 · 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) repeat each test (b) use the same load (c) record every result (d) guess, do not measure
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
3. 3.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
4. 4.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
5. 5.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
7. 7.True or false: to test it only once is poor testing. (a) False (b) True
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
9. 9.True or false: to record every result is good testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) repeat each test (d) test it only once
11. 11.True or false: to skip writing results is good testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) measure the same way (d) guess, do not measure
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 130 g and 240 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.True or false: to guess, do not measure is poor testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 90 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
23. 23.🧪 A paper bridge was tested three times. It held 420 g, 320 g and 280 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
27. 27.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) hide a failed test
28. 28.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
30. 30.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
31. 31.True or false: to use the same load is poor testing. (a) True (b) False
32. 32.🧪 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
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
35. 35.True or false: to record every result is poor testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) repeat each test (d) measure the same way
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) choose and draw one
38. 38.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) skip writing results (d) hide a failed test
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.True or false: to use a new load each time is good testing. (a) False (b) True

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