Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 983 · 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) test it only once (b) change lots at once (c) repeat each test (d) hide a failed test
2. 2.🧪 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
3. 3.True or false: to repeat each test is poor testing. (a) False (b) True
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
7. 7.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
8. 8.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) load it with coins
9. 9.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to record every result is poor testing. (a) True (b) False
11. 11.🧪 A paper bridge was tested three times. It held 190 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 80 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to use the same load is poor testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
15. 15.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
16. 16.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) skip writing results
17. 17.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) change lots at once (d) test it only once
18. 18.True or false: to change only one thing is good testing. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) record every result (d) measure the same way
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
21. 21.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 170 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) repeat each test
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) use the same load
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) use the same load (d) change only one thing
30. 30.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) record every result
33. 33.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 410 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
37. 37.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) measure the same way (d) change lots at once
40. 40.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 170 g. What is the mean (average) load it held, in grams?

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