Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 591 · 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 the same load (b) skip writing results (c) hide a failed test (d) use a new load each time
2. 2.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
3. 3.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
4. 4.True or false: to measure the same way is poor testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) choose and draw one (d) read the challenge rules
6. 6.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) change only one thing (d) record every result
7. 7.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
8. 8.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 360 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) change lots at once
13. 13.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
16. 16.🔢 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
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) skip writing results (d) guess, do not measure
18. 18.True or false: to guess, do not measure is good testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change only one thing is good testing. (a) False (b) True
23. 23.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
24. 24.True or false: to repeat each test is poor testing. (a) True (b) False
25. 25.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
26. 26.True or false: to skip writing results is poor testing. (a) True (b) False
27. 27.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 200 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) guess, do not measure (d) change lots at once
32. 32.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 330 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 320 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
36. 36.True or false: to hide a failed test is poor testing. (a) False (b) True
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
39. 39.True or false: to use a new load each time is poor testing. (a) False (b) True
40. 40.True or false: to change lots at once is poor testing. (a) False (b) True

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