Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 646 · 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.True or false: to change only one thing is poor testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) hide a failed test (d) repeat each test
4. 4.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
13. 13.True or false: to skip writing results is poor testing. (a) True (b) False
14. 14.True or false: to measure the same way is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
18. 18.True or false: to test it only once is poor testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
20. 20.True or false: to use a new load each time is poor testing. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use the same load (d) guess, do not measure
22. 22.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 140 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
27. 27.🧪 A paper bridge was tested three times. It held 200 g, 60 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
29. 29.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) measure the same way (d) repeat each test
31. 31.True or false: to guess, do not measure is poor testing. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) test it only once (d) record every result
34. 34.🧪 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 strongest? (a) design A (b) design B (c) design C
35. 35.True or false: to guess, do not measure is good testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 90 g. What is the mean (average) load it held, in grams?
37. 37.🔢 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) build it with straws (d) read the challenge rules
38. 38.🧪 A paper bridge was tested three times. It held 200 g, 70 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules

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