Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 239 · 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) all of them (c) none (d) one
2. 2.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
5. 5.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) test it only once (d) use a new load each time
6. 6.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) guess, do not measure (d) test it only once
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) record every result (d) measure the same way
8. 8.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 320 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
15. 15.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
17. 17.True or false: to test it only once is good testing. (a) True (b) False
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
19. 19.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) record every result (d) measure the same way
21. 21.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 330 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) measure the same way (d) repeat each test
23. 23.True or false: to use the same load is good testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
26. 26.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) record every result
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
28. 28.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
29. 29.True or false: to record every result is poor testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to measure the same way is good testing. (a) False (b) True
33. 33.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design A (b) design C (c) design B
35. 35.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
36. 36.True or false: to change lots at once is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
40. 40.True or false: to skip writing results is poor testing. (a) True (b) False

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