Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 821 · 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, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
2. 2.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) repeat each test
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
10. 10.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
13. 13.🧪 A paper bridge was tested three times. It held 420 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
14. 14.🔢 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) build it with straws
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change only one thing (d) repeat each test
16. 16.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
17. 17.True or false: to change lots at once is good testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 380 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to guess, do not measure is good testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
22. 22.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
23. 23.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
24. 24.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
28. 28.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) skip writing results
30. 30.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 410 g, 330 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 250 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
35. 35.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) skip writing results (d) hide a failed test
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
37. 37.🧪 A paper bridge was tested three times. It held 400 g, 330 g and 260 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
39. 39.True or false: to skip writing results is good testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) test it only once (d) repeat each test

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