Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 701 · 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 guess, do not measure is poor testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) load it with coins
4. 4.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
5. 5.True or false: to use the same load is good testing. (a) True (b) False
6. 6.True or false: to repeat each test is poor testing. (a) False (b) True
7. 7.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) hide a failed test (d) change only one thing
11. 11.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
12. 12.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
13. 13.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 380 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to change only one thing is poor testing. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change only one thing (d) measure the same way
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
19. 19.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) measure the same way
21. 21.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
22. 22.True or false: to test it only once is poor testing. (a) False (b) True
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.True or false: to repeat each test is good testing. (a) False (b) True
25. 25.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
28. 28.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
30. 30.True or false: to use a new load each time is poor testing. (a) False (b) True
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design C (b) design B (c) design A
32. 32.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
33. 33.🔢 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) build it with straws
34. 34.🧪 A paper bridge was tested three times. It held 190 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 230 g, 190 g and 180 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) guess, do not measure
37. 37.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) choose and draw one
39. 39.🧪 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 B (b) design C (c) design A
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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