Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 775 · 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.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
3. 3.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 110 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) change lots at once
10. 10.True or false: to test it only once is poor testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 170 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) change only one thing (d) guess, do not measure
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
19. 19.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 250 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 “build it with straws”? (a) build it with straws (b) strengthen the weak part
21. 21.True or false: to change only one thing is poor testing. (a) False (b) True
22. 22.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) skip writing results (d) measure the same way
24. 24.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) choose and draw one
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) guess, do not measure
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.True or false: to test it only once is good testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
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) build it with straws (d) sketch three ideas
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) use the same load (d) measure the same way
35. 35.True or false: to skip writing results is poor testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
37. 37.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 100 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing

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