Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 218 · 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 guess, do not measure? (a) poor testing (b) good testing
2. 2.🔢 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
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) test it only once
6. 6.True or false: to skip writing results is poor testing. (a) True (b) False
7. 7.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
8. 8.True or false: to use the same load is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
16. 16.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
19. 19.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
20. 20.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) measure the same way
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change lots at once (d) change only one thing
24. 24.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) build it with straws
25. 25.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
26. 26.🧪 A paper bridge was tested three times. It held 190 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 140 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 290 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) skip writing results (d) measure the same way
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design B (b) design C (c) design A
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
33. 33.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
38. 38.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change lots at once (d) record every result
39. 39.True or false: to hide a failed test is poor testing. (a) False (b) True
40. 40.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?

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