Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 790 · 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.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
7. 7.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) guess, do not measure (d) repeat each test
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 210 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
12. 12.True or false: to measure the same way is poor testing. (a) True (b) False
13. 13.True or false: to test it only once is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use a new load each time (d) skip writing results
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
16. 16.🧪 A paper bridge was tested three times. It held 400 g, 350 g and 300 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to record every result is poor testing. (a) True (b) False
19. 19.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
21. 21.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) repeat each test (d) change only one thing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to skip writing results is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) hide a failed test (d) measure the same way
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 comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
31. 31.True or false: to change lots at once is poor testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change only one thing (d) guess, do not measure
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) guess, do not measure (d) use a new load each time
36. 36.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing

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