Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 539 · 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.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
2. 2.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) record every result
3. 3.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
4. 4.🔢 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) choose and draw one
5. 5.True or false: to skip writing results is poor testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
9. 9.True or false: to change only one thing is good testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) test it only once (d) hide a failed test
13. 13.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 220 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) test it only once (c) guess, do not measure (d) hide a failed test
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.True or false: to guess, do not measure is good testing. (a) True (b) False
19. 19.🧪 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
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) use a new load each time (d) skip writing results
21. 21.True or false: to change lots at once is poor testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 280 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to use a new load each time is good testing. (a) True (b) False
25. 25.True or false: to test it only once is poor testing. (a) True (b) False
26. 26.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🔢 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
29. 29.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
31. 31.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 200 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 230 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 90 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change lots at once (d) use the same load
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
37. 37.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
38. 38.🔢 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
39. 39.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 120 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to change lots at once is good testing. (a) True (b) False

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