Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 737 · 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.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
2. 2.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) use a new load each time (d) use the same load
4. 4.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) use a new load each time
6. 6.🔢 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
7. 7.True or false: to test it only once is good testing. (a) True (b) False
8. 8.🔢 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
9. 9.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
11. 11.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🧪 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 weakest? (a) design A (b) design C (c) design B
13. 13.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
14. 14.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
15. 15.🧪 A paper bridge was tested three times. It held 350 g, 340 g and 360 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 420 g, 290 g and 310 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to guess, do not measure is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
20. 20.🧪 A paper bridge was tested three times. It held 280 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) measure the same way (d) hide a failed test
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
24. 24.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
25. 25.True or false: to repeat each test is good testing. (a) True (b) False
26. 26.True or false: to use the same load is good testing. (a) True (b) False
27. 27.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
30. 30.True or false: to guess, do not measure is good testing. (a) False (b) True
31. 31.True or false: to measure the same way is good testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) hide a failed test (d) skip writing results
33. 33.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) change lots at once (d) repeat each test
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
38. 38.True or false: to change lots at once is poor testing. (a) False (b) True
39. 39.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
40. 40.True or false: to record every result is poor testing. (a) True (b) False

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