Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 941 · 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.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to use the same load is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
4. 4.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) test it only once (d) record every result
5. 5.True or false: to use a new load each time is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 290 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
9. 9.🧪 A paper bridge was tested three times. It held 170 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
14. 14.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
15. 15.True or false: to skip writing results is good testing. (a) False (b) True
16. 16.True or false: to change only one thing is good testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) record every result (d) change only one thing
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
19. 19.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
20. 20.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) build it with straws
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 90 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) skip writing results (d) test it only once
25. 25.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
32. 32.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) repeat each test (d) record every result
33. 33.🧪 A paper bridge was tested three times. It held 260 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
35. 35.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
37. 37.True or false: to measure the same way is poor testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) guess, do not measure
39. 39.True or false: to test it only once is poor testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one

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