Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 661 · 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 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design C (b) design A (c) design B
2. 2.True or false: to use the same load is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
4. 4.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) use a new load each time
5. 5.🔢 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
6. 6.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
7. 7.🧪 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 strongest? (a) design C (b) design B (c) design A
8. 8.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
9. 9.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
10. 10.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
11. 11.🧪 A paper bridge was tested three times. It held 230 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to hide a failed test is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) skip writing results
17. 17.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) skip writing results
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) measure the same way (d) record every result
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design C (c) design A
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
24. 24.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
26. 26.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
30. 30.True or false: to guess, do not measure is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
33. 33.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
34. 34.True or false: to skip writing results is poor testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) guess, do not measure
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) hide a failed test (d) change lots at once
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
40. 40.True or false: to use a new load each time is good testing. (a) True (b) False

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