Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 22 · 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 record every result? (a) good testing (b) poor testing
2. 2.True or false: to repeat each test is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
4. 4.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
7. 7.🧪 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
8. 8.True or false: to record every result is poor testing. (a) True (b) False
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) measure the same way
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.True or false: to use a new load each time is poor testing. (a) False (b) True
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.True or false: to test it only once is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design C (b) design B (c) design A
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
18. 18.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.🧪 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 strongest? (a) design C (b) design B (c) design A
21. 21.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) change only one thing (d) guess, do not measure
22. 22.True or false: to guess, do not measure is good testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 370 g, 340 g and 340 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) use a new load each time (d) skip writing results
25. 25.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
26. 26.🔢 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
27. 27.True or false: to change lots at once is poor testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) build it with straws
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
32. 32.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) record every result (d) repeat each test
34. 34.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 130 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) measure the same way (d) change only one thing
36. 36.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 340 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to record every result is good testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to change only one thing is good testing. (a) True (b) False

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