Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 850 · 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 test it only once? (a) poor testing (b) good testing
2. 2.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
3. 3.True or false: to record every result is poor testing. (a) True (b) False
4. 4.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
5. 5.🔢 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
6. 6.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
9. 9.True or false: to use a new load each time is good testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change lots at once (d) change only one thing
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
15. 15.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) guess, do not measure (d) measure the same way
17. 17.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
18. 18.True or false: to measure the same way is good testing. (a) False (b) True
19. 19.True or false: to guess, do not measure is poor testing. (a) True (b) False
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) change lots at once (d) use the same load
23. 23.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) build it with straws
24. 24.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change lots at once (d) guess, do not measure
26. 26.True or false: to change only one thing is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 300 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
29. 29.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
31. 31.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
32. 32.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
33. 33.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design A (c) design C
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) repeat each test (d) hide a failed test
40. 40.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing

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