Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 280 · 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 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🔢 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
4. 4.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
5. 5.True or false: to record every result is good testing. (a) False (b) True
6. 6.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
8. 8.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) load it with coins (d) read the challenge rules
11. 11.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
15. 15.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) measure the same way (d) repeat each test
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 410 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) guess, do not measure (d) change only one thing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.🧪 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
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) measure the same way (d) change only one thing
23. 23.True or false: to hide a failed test is poor testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
25. 25.True or false: to skip writing results is poor testing. (a) True (b) False
26. 26.True or false: to use the same load is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) change lots at once (d) record every result
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.True or false: to use the same load is poor testing. (a) False (b) True
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
35. 35.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) use a new load each time
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 210 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 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?

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