Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 852 · 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 measure the same way is good testing. (a) True (b) False
2. 2.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
5. 5.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) hide a failed test (d) record every result
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) record every result (d) change only one thing
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) change only one thing (d) test it only once
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.True or false: to record every result is good testing. (a) True (b) False
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) build it with straws
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
15. 15.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
16. 16.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) change lots at once (d) record every result
18. 18.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
19. 19.True or false: to change only one thing is good testing. (a) False (b) True
20. 20.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
21. 21.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) hide a failed test
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) use the same load (d) test it only once
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 330 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 340 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to repeat each test is good testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
30. 30.True or false: to change lots at once is poor testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) guess, do not measure (d) record every result
32. 32.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) read the challenge rules
33. 33.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) measure the same way
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 hide a failed test is good testing. (a) True (b) False
38. 38.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 200 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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