Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 74 · 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.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
2. 2.🧪 A paper bridge was tested three times. It held 240 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
6. 6.True or false: to use the same load is poor testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) guess, do not measure (d) change only one thing
9. 9.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
10. 10.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) build it with straws
11. 11.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) sketch three ideas
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) strengthen the weak part
15. 15.🧪 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
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) use the same load (d) repeat each test
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
21. 21.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
22. 22.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) repeat each test (d) test it only once
25. 25.🧪 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
26. 26.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) skip writing results
31. 31.🧪 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 strongest? (a) design B (b) design C (c) design A
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) record every result
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) hide a failed test (d) use the same load
36. 36.True or false: to skip writing results is good testing. (a) True (b) False
37. 37.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
38. 38.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 340 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
40. 40.True or false: to guess, do not measure is good testing. (a) True (b) False

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