Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 163 · 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) skip writing results (b) test it only once (c) hide a failed test (d) record every result
2. 2.True or false: to use a new load each time is good testing. (a) False (b) True
3. 3.True or false: to use the same load is poor testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
7. 7.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) strengthen the weak part
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.True or false: to repeat each test is poor testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) change lots at once (d) change only one thing
14. 14.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
18. 18.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) skip writing results (d) hide a failed test
20. 20.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 130 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
22. 22.True or false: to repeat each test is good testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design B (b) design A (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to record every result is good testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 110 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) guess, do not measure (d) change only one thing
33. 33.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 170 g, 60 g and 250 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 410 g, 280 g and 240 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?

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