Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 456 · 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.True or false: to use the same load is poor testing. (a) True (b) False
2. 2.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
4. 4.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
5. 5.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) guess, do not measure (d) change lots at once
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
7. 7.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
8. 8.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
12. 12.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
13. 13.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) measure the same way (d) change only one thing
14. 14.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
15. 15.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
17. 17.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
19. 19.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.🧪 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
21. 21.True or false: to repeat each test is poor testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) measure the same way
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
24. 24.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
25. 25.🧪 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 strongest? (a) design B (b) design A (c) design C
26. 26.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
28. 28.True or false: to repeat each test is good testing. (a) False (b) True
29. 29.True or false: to test it only once is poor testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
31. 31.True or false: to skip writing results is good testing. (a) True (b) False
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) skip writing results (d) guess, do not measure
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
37. 37.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use the same load (d) change only one thing
38. 38.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 380 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) use a new load each time
40. 40.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) skip writing results (d) change lots at once

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