Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 128 · 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 230 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
3. 3.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) skip writing results (d) hide a failed test
4. 4.True or false: to change only one thing is poor testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
6. 6.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
7. 7.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
8. 8.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) test it only once (d) repeat each test
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) build it with straws
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) use a new load each time
11. 11.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) change only one thing
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
14. 14.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
17. 17.True or false: to use a new load each time is poor testing. (a) True (b) False
18. 18.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
19. 19.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
21. 21.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) test it only once
24. 24.🔢 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
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
28. 28.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 390 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
31. 31.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 260 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 420 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to test it only once is poor testing. (a) False (b) True
35. 35.True or false: to test it only once is good testing. (a) True (b) False
36. 36.True or false: to measure the same way is poor testing. (a) True (b) False
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) sketch three ideas
39. 39.🧪 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 weakest? (a) design A (b) design B (c) design C
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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