Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 301 · 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.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) skip writing results (d) guess, do not measure
2. 2.True or false: to repeat each test is poor testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 250 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
6. 6.True or false: to measure the same way is good testing. (a) False (b) True
7. 7.True or false: to use a new load each time is poor testing. (a) False (b) True
8. 8.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
9. 9.🧪 A paper bridge was tested three times. It held 420 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
11. 11.True or false: to record every result is good testing. (a) False (b) True
12. 12.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
13. 13.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins
14. 14.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
18. 18.True or false: to change only one thing is poor testing. (a) False (b) True
19. 19.True or false: to guess, do not measure is poor testing. (a) True (b) False
20. 20.True or false: to guess, do not measure is good testing. (a) True (b) False
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 320 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
25. 25.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) build it with straws
26. 26.True or false: to test it only once is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 260 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) guess, do not measure
30. 30.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) measure the same way
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
34. 34.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 320 g, 150 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🔢 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
37. 37.🔍 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
38. 38.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 190 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 290 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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