Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 608 · 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.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) record every result (d) change lots at once
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
4. 4.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) repeat each test (d) change lots at once
6. 6.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
7. 7.True or false: to measure the same way is good testing. (a) True (b) False
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 400 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) guess, do not measure
13. 13.True or false: to measure the same way is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) record every result (d) measure the same way
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
17. 17.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 350 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
21. 21.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) choose and draw one
23. 23.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change only one thing (d) measure the same way
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 100 g and 160 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use the same load is good testing. (a) False (b) True
27. 27.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) change only one thing (d) guess, do not measure
29. 29.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
31. 31.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
32. 32.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
33. 33.True or false: to record every result is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 350 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use the same load (d) measure the same way
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.True or false: to skip writing results is poor testing. (a) False (b) True
38. 38.🧪 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 B (c) design A
39. 39.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing

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