Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 711 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design B (b) design C (c) design A
2. 2.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
6. 6.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
9. 9.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
10. 10.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
11. 11.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 260 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to use the same load is poor testing. (a) False (b) True
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) load it with coins
16. 16.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) use a new load each time (d) change lots at once
17. 17.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) change only one thing (d) test it only once
22. 22.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
24. 24.True or false: to guess, do not measure is good testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) skip writing results (d) record every result
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
28. 28.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) test it only once
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🔢 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
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) skip writing results (d) measure the same way
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
36. 36.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) measure the same way (d) change only one thing
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part

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