Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 978 · 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.🧪 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
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
5. 5.True or false: to test it only once is poor testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.True or false: to skip writing results is poor testing. (a) False (b) True
9. 9.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
10. 10.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
11. 11.True or false: to change only one thing is good testing. (a) False (b) True
12. 12.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
13. 13.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use a new load each time (d) test it only once
14. 14.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) change only one thing (d) test it only once
15. 15.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) use the same load
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) record every result
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 180 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change lots at once is good testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 340 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) repeat each test (d) test it only once
28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
29. 29.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 390 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 380 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to repeat each test is poor testing. (a) False (b) True
36. 36.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) repeat each test
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
39. 39.True or false: to test it only once is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?

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