Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 571 · 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) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) record every result (d) change only one thing
3. 3.True or false: to measure the same way is poor testing. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) use a new load each time
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) repeat each test
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) skip writing results (d) repeat each test
8. 8.True or false: to repeat each test is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) hide a failed test (d) change lots at once
11. 11.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
15. 15.🧪 A paper bridge was tested three times. It held 430 g, 310 g and 250 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.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to change only one thing is good testing. (a) False (b) True
19. 19.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
21. 21.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
22. 22.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
23. 23.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
25. 25.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 70 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use a new load each time is good testing. (a) False (b) True
27. 27.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
28. 28.True or false: to measure the same way is good testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
31. 31.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
32. 32.🧪 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 C (c) design A
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
34. 34.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
38. 38.True or false: to hide a failed test is good testing. (a) True (b) False
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper

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