Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 925 · 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) change only one thing (b) record every result (c) skip writing results (d) repeat each test
2. 2.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) hide a failed test
3. 3.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
4. 4.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
6. 6.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) load it with coins
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
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 use the same load? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design A (b) design C (c) design B
12. 12.True or false: to change only one thing is poor testing. (a) True (b) False
13. 13.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
14. 14.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) guess, do not measure (d) hide a failed test
15. 15.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
17. 17.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) use the same load (d) skip writing results
19. 19.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) change only one thing
23. 23.True or false: to test it only once is good testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) sketch three ideas
25. 25.🔢 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
26. 26.🧪 A paper bridge was tested three times. It held 410 g, 280 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) guess, do not measure (d) measure the same way
28. 28.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
32. 32.True or false: to measure the same way is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to use a new load each time is poor testing. (a) True (b) False
35. 35.🧪 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 weakest? (a) design C (b) design A (c) design B
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
39. 39.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
40. 40.True or false: to test it only once is poor testing. (a) True (b) False

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