Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 811 · 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 change lots at once? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.True or false: to repeat each test is poor testing. (a) False (b) True
4. 4.True or false: to repeat each test is good testing. (a) False (b) True
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
6. 6.True or false: to hide a failed test is good testing. (a) True (b) False
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
9. 9.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
11. 11.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) guess, do not measure (d) measure the same way
14. 14.True or false: to guess, do not measure is poor testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) repeat each test (d) change lots at once
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
17. 17.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
18. 18.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
19. 19.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) read the challenge rules
21. 21.True or false: to guess, do not measure is good testing. (a) True (b) False
22. 22.True or false: to skip writing results is good testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) hide a failed test (d) change only one thing
25. 25.True or false: to record every result is poor testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) measure the same way
28. 28.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
29. 29.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
33. 33.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) measure the same way
34. 34.🧪 A paper bridge was tested three times. It held 160 g, 130 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
38. 38.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
40. 40.True or false: to change lots at once is good testing. (a) True (b) False

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