Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 901 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
3. 3.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
4. 4.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) record every result
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.True or false: to test it only once is good testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) change only one thing (d) repeat each test
13. 13.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 360 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use a new load each time (d) record every result
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
17. 17.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
18. 18.True or false: to use a new load each time is good testing. (a) False (b) True
19. 19.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 500 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
23. 23.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) skip writing results (d) measure the same way
26. 26.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
27. 27.🧪 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
28. 28.True or false: to guess, do not measure is poor testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 230 g and 270 g. What is the mean (average) load it held, in grams?
30. 30.🧪 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?
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
33. 33.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 70 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) skip writing results
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use the same load is good testing. (a) True (b) False
39. 39.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) skip writing results (d) use a new load each time

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