Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 417 · 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 poor testing. (a) True (b) False
2. 2.🧪 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
3. 3.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) measure the same way
4. 4.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 290 g. What is the mean (average) load it held, in grams?
5. 5.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) hide a failed test
7. 7.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) repeat each test
9. 9.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
17. 17.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) use a new load each time (d) measure the same way
21. 21.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) record every result
23. 23.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
24. 24.True or false: to test it only once is good testing. (a) True (b) False
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
27. 27.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
30. 30.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
32. 32.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) guess, do not measure (d) test it only once
33. 33.True or false: to guess, do not measure is good testing. (a) False (b) True
34. 34.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) skip writing results
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?

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