Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 673 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
2. 2.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) record every result (d) repeat each test
3. 3.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
5. 5.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) guess, do not measure (d) repeat each test
8. 8.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 400 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
10. 10.🧪 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?
11. 11.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
12. 12.True or false: to change only one thing is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 430 g, 280 g and 310 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
17. 17.True or false: to guess, do not measure is poor testing. (a) True (b) False
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
20. 20.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
22. 22.True or false: to change lots at once is poor testing. (a) False (b) True
23. 23.True or false: to repeat each test is good testing. (a) False (b) True
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
31. 31.True or false: to use a new load each time is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 150 g, 50 g and 250 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
36. 36.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) build it with straws
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
39. 39.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) hide a failed test (d) measure the same way
40. 40.True or false: to measure the same way is poor testing. (a) False (b) True

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