Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 171 · 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.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
2. 2.True or false: to guess, do not measure is poor testing. (a) True (b) False
3. 3.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 410 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to repeat each test is good testing. (a) False (b) True
5. 5.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 380 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) measure the same way (d) guess, do not measure
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) hide a failed test
13. 13.🧪 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
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
15. 15.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 410 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 370 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) record every result (d) repeat each test
18. 18.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
21. 21.True or false: to measure the same way is good testing. (a) True (b) False
22. 22.True or false: to skip writing results is poor testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) load it with coins
24. 24.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
25. 25.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
27. 27.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
28. 28.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
29. 29.True or false: to repeat each test is poor testing. (a) True (b) False
30. 30.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) change only one thing (d) use the same load
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
38. 38.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) change only one thing (d) skip writing results
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 170 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 280 g. What is the mean (average) load it held, in grams?

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