Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 387 · 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 use a new load each time? (a) poor testing (b) good testing
2. 2.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
5. 5.True or false: to hide a failed test is good testing. (a) True (b) False
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) repeat each test (d) test it only once
9. 9.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
10. 10.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
11. 11.True or false: to test it only once is poor testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.True or false: to change only one thing is poor testing. (a) False (b) True
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 60 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) use a new load each time
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
19. 19.🧪 A paper bridge was tested three times. It held 220 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) measure the same way
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 240 g, 60 g and 150 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) hide a failed test (d) use the same load
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
26. 26.🧪 A paper bridge was tested three times. It held 230 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) hide a failed test
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
29. 29.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
30. 30.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
31. 31.True or false: to change lots at once is good testing. (a) True (b) False
32. 32.True or false: to guess, do not measure is good testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) choose and draw one
34. 34.🧪 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
35. 35.🔢 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) build it with straws (d) read the challenge rules
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.True or false: to skip writing results is good testing. (a) False (b) True
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 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 poor testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 290 g. What is the mean (average) load it held, in grams?

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