Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 935 · 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) record every result (b) hide a failed test (c) use a new load each time (d) skip writing results
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.True or false: to record every result is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change only one thing (d) record every result
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) choose and draw one
14. 14.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
16. 16.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
17. 17.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
18. 18.True or false: to change lots at once is poor testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 320 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
21. 21.True or false: to record every result is good testing. (a) True (b) False
22. 22.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 360 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
25. 25.🔢 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
26. 26.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) measure the same way (d) repeat each test
27. 27.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
28. 28.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
31. 31.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
33. 33.True or false: to change only one thing is good testing. (a) False (b) True
34. 34.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
35. 35.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 180 g and 130 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) read the challenge rules
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
39. 39.True or false: to use the same load is good testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) test it only once (d) use the same load

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