Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 275 · 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.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
2. 2.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
3. 3.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 130 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.True or false: to change lots at once is good testing. (a) True (b) False
6. 6.🧪 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?
7. 7.True or false: to record every result is poor testing. (a) True (b) False
8. 8.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) repeat each test (d) change lots at once
15. 15.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 290 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
18. 18.True or false: to guess, do not measure is poor testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
20. 20.True or false: to repeat each test is poor testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) measure the same way (d) hide a failed test
22. 22.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.True or false: to skip writing results is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 300 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 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
29. 29.🧪 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 weakest? (a) design A (b) design B (c) design C
30. 30.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) use a new load each time (d) guess, do not measure
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) build it with straws
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) use a new load each time
34. 34.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
35. 35.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
36. 36.True or false: to test it only once is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
38. 38.True or false: to repeat each test is good testing. (a) False (b) True
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C

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