Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 198 · 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.True or false: to use the same load is poor testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) choose and draw one
3. 3.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
7. 7.True or false: to change only one thing is good testing. (a) False (b) True
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.True or false: to change lots at once is poor testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
13. 13.True or false: to use a new load each time is good testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
17. 17.True or false: to record every result is poor testing. (a) False (b) True
18. 18.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change lots at once (d) use a new load each time
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
25. 25.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
31. 31.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) change lots at once (d) guess, do not measure
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use the same load (d) use a new load each time
33. 33.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
35. 35.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.True or false: to hide a failed test is good testing. (a) False (b) True
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
39. 39.True or false: to skip writing results is good testing. (a) False (b) True
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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