Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 599 · 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 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
2. 2.True or false: to skip writing results is poor testing. (a) False (b) True
3. 3.True or false: to use the same load is poor testing. (a) True (b) False
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
7. 7.True or false: to measure the same way is good testing. (a) True (b) False
8. 8.True or false: to guess, do not measure is good testing. (a) False (b) True
9. 9.True or false: to repeat each test is good testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change lots at once (d) measure the same way
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use a new load each time (d) repeat each test
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
17. 17.True or false: to test it only once is good testing. (a) True (b) False
18. 18.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
21. 21.🧪 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 weakest? (a) design B (b) design A (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design B (b) design A (c) design C
24. 24.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 340 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
28. 28.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
29. 29.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
31. 31.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
32. 32.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to test it only once is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) skip writing results (d) change lots at once
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) guess, do not measure (d) skip writing results
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
40. 40.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 390 g. What is the mean (average) load it held, in grams?

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