Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 89 · 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.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
2. 2.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
9. 9.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) hide a failed test (d) record every result
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
12. 12.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to use a new load each time is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
21. 21.True or false: to repeat each test is poor testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) use the same load
24. 24.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) change only one thing (d) hide a failed test
25. 25.True or false: to measure the same way is good testing. (a) False (b) True
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
28. 28.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 300 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) repeat each test (d) change lots at once
30. 30.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) load it with coins
32. 32.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
33. 33.True or false: to record every result is poor testing. (a) False (b) True
34. 34.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) guess, do not measure (d) hide a failed test
37. 37.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 240 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
39. 39.🔢 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
40. 40.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?

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