Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 55 · 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 repeat each test? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.True or false: to change only one thing is poor testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) test it only once
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) hide a failed test (d) skip writing results
10. 10.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) repeat each test (d) use the same load
11. 11.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) repeat each test (d) measure the same way
14. 14.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) repeat each test (d) measure the same way
15. 15.True or false: to change only one thing is good testing. (a) True (b) False
16. 16.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
17. 17.🧪 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
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) measure the same way (d) guess, do not measure
19. 19.True or false: to use a new load each time is poor testing. (a) True (b) False
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
22. 22.True or false: to change lots at once is good testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
25. 25.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
27. 27.True or false: to repeat each test is good testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 340 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
30. 30.True or false: to record every result is poor testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) record every result (d) repeat each test
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
33. 33.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
34. 34.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
37. 37.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change lots at once (d) change only one thing

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