Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 602 · 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.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change only one thing (d) record every result
2. 2.🧪 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
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) measure the same way
4. 4.True or false: to hide a failed test is good testing. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) use a new load each time (d) guess, do not measure
6. 6.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) measure the same way (d) repeat each test
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
12. 12.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
15. 15.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) read the challenge rules
18. 18.True or false: to hide a failed test is poor testing. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) use the same load
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
30. 30.True or false: to skip writing results is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 410 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change lots at once (d) guess, do not measure
33. 33.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
35. 35.True or false: to use a new load each time is poor testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 130 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
38. 38.🧪 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 strongest? (a) design B (b) design A (c) design C
39. 39.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) record every result
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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