Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 538 · 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.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
2. 2.True or false: to change only one thing is good testing. (a) False (b) True
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
5. 5.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
6. 6.🔢 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
7. 7.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
10. 10.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
17. 17.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 370 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) use the same load
21. 21.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
23. 23.True or false: to use a new load each time is good testing. (a) False (b) True
24. 24.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 120 g and 140 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 280 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 340 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
29. 29.True or false: to record every result is good testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.🔍 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
32. 32.🧪 A paper bridge was tested three times. It held 150 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
34. 34.🔢 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) choose and draw one (d) sketch three ideas
35. 35.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) record every result (d) change only one thing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
38. 38.🧪 A paper bridge was tested three times. It held 420 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part

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