Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 619 · 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 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) measure the same way (d) change only one thing
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) use the same load (d) record every result
4. 4.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) use a new load each time (d) measure the same way
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws
6. 6.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
7. 7.🧪 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 C (b) design A (c) design B
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) hide a failed test
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
11. 11.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 130 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) guess, do not measure (d) change only one thing
14. 14.True or false: to guess, do not measure is good testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 330 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
19. 19.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) use a new load each time (d) change lots at once
20. 20.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.True or false: to use the same load is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.True or false: to hide a failed test is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 330 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
30. 30.True or false: to change only one thing is poor testing. (a) True (b) False
31. 31.True or false: to record every result is poor testing. (a) True (b) False
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
35. 35.🧪 A paper bridge was tested three times. It held 320 g, 150 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change only one thing (d) change lots at once
38. 38.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
39. 39.True or false: to repeat each test is poor testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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