Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 214 · 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.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
4. 4.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.True or false: to use a new load each time is good testing. (a) True (b) False
11. 11.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
15. 15.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) hide a failed test (d) measure the same way
16. 16.True or false: to guess, do not measure is poor testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) skip writing results (d) change only one thing
18. 18.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to record every result is poor testing. (a) False (b) True
20. 20.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
21. 21.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 210 g and 390 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
24. 24.True or false: to repeat each test is poor testing. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) use the same load (d) record every result
26. 26.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) sketch three ideas
28. 28.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 400 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to measure the same way is poor testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🧪 A paper bridge was tested three times. It held 420 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 140 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) measure the same way (d) use the same load
34. 34.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
35. 35.True or false: to test it only once is good testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
37. 37.True or false: to use a new load each time is poor testing. (a) False (b) True
38. 38.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
39. 39.True or false: to use the same load is good testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) guess, do not measure

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