Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 849 · 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) one (c) none (d) all of them
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change lots at once (d) test it only once
4. 4.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.True or false: to repeat each test is good testing. (a) False (b) True
7. 7.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
8. 8.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
10. 10.True or false: to skip writing results is good testing. (a) False (b) True
11. 11.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) hide a failed test
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) use the same load (d) repeat each test
15. 15.🧪 A paper bridge was tested three times. It held 210 g, 180 g and 210 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to record every result is good testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design C (b) design A (c) design B
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.True or false: to change lots at once is poor testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) record every result (d) hide a failed test
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
25. 25.True or false: to change only one thing is good testing. (a) False (b) True
26. 26.True or false: to use a new load each time is good testing. (a) True (b) False
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) build it with straws
28. 28.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 180 g, 90 g and 270 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) use a new load each time
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) change lots at once
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use the same load (d) measure the same way
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
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 A (c) design C
36. 36.True or false: to use the same load is good testing. (a) False (b) True
37. 37.True or false: to test it only once is good testing. (a) False (b) True
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.True or false: to use the same load is poor testing. (a) False (b) True
40. 40.True or false: to measure the same way is good testing. (a) False (b) True

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