Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 572 · 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.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
3. 3.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) sketch three ideas
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) repeat each test (d) record every result
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) repeat each test (d) record every result
7. 7.True or false: to change only one thing is good testing. (a) False (b) True
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) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
12. 12.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
13. 13.🧪 A paper bridge was tested three times. It held 390 g, 290 g and 310 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
16. 16.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
19. 19.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 180 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) hide a failed test (d) test it only once
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
25. 25.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
27. 27.🧪 A paper bridge was tested three times. It held 420 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) change only one thing (d) use the same load
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
31. 31.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
34. 34.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
35. 35.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
37. 37.🔢 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
38. 38.True or false: to use the same load is good testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
40. 40.True or false: to measure the same way is poor testing. (a) False (b) True

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