Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 573 · 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 measure the same way is good testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) measure the same way (d) record every result
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 80 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 320 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
12. 12.True or false: to skip writing results is good testing. (a) True (b) False
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
14. 14.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
16. 16.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
17. 17.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) measure the same way (d) test it only once
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
21. 21.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) test it only once
26. 26.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) measure the same way (d) repeat each test
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) build it with straws
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
30. 30.True or false: to use the same load is poor testing. (a) True (b) False
31. 31.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) change lots at once
33. 33.True or false: to hide a failed test is good testing. (a) True (b) False
34. 34.True or false: to change only one thing is poor testing. (a) True (b) False
35. 35.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) skip writing results (d) use a new load each time
38. 38.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
39. 39.True or false: to change lots at once is good testing. (a) True (b) False
40. 40.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?

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