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Unit 1 review (answers)

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Unit 1 review (answers)

  1. 1. Intro to Earth Science TEST REVIEW
  2. 2. You are designing an experiment to see if studying with music improves science test scores… What is your independent variable?
  3. 3. Answer • Music
  4. 4. You are designing an experiment to see if studying with music improves science test scores… What is something you would want to keep the same when performing this experiment?
  5. 5. Answer • Amount of time studied • People participating need to have same intelligence, background etc. • Subject studied • And Many more!!!
  6. 6. You are designing an experiment to see if studying with music improves science test scores… What would the dependent variable be?
  7. 7. Answer • The scores on the test
  8. 8. Here is the data you recorded: Test # Test Score with Music Test Score without Music 1 78 88 2 70 72 3 85 91 What conclusion can you make from the data above?
  9. 9. Answer • Studying with music does not cause scores to increase
  10. 10. Thinking of the Music experiment….. What is one thing that could be done to make results more reliable?
  11. 11. Answer • Repeat the experiment
  12. 12. Thinking of the Music experiment….. What is one thing that could have happened to make the results less reliable?
  13. 13. Answer • Many possible answers….changing or altering any of the controlled variables causes results to be unreliable
  14. 14. A topographic map shows changes in ___________________
  15. 15. Answer • elevation
  16. 16. What feature does this topographic map show?
  17. 17. Answer • A hill or mountain
  18. 18. The highest point of elevation is found at what point?
  19. 19. Answer • A
  20. 20. What is the elevation at point c? 200m 150m 100m 50m
  21. 21. Answer • Between 100m and 150m
  22. 22. What is the contour interval on this map? 200m 150m 100m 50m
  23. 23. Answer • 50 m
  24. 24. What feature does this represent?
  25. 25. Answer • A depression
  26. 26. How will your mass change if you traveled to the moon?
  27. 27. Answer • Mass will not change, only weight will change because it is effected by gravity
  28. 28. What does temperature measure?
  29. 29. Answer • The motion (kinetic energy) of particles
  30. 30. To measure the mass of a liquid, what unit of measurement would you use?
  31. 31. Answer • Grams
  32. 32. Which sphere includes plants and animals?
  33. 33. Answer • Biosphere
  34. 34. Volcanoes and Earthquakes are found in what sphere?
  35. 35. Answer • Geosphere
  36. 36. Explain how a volcanic eruption from the geosphere could effect 2 other spheres?
  37. 37. Answer • Atmosphere: ash and gases ejected from eruption • Hydrosphere: ash deposits contaminate water • Biosphere: Plants and animals are unable to survive due to air and water quality, habitat destruction • Geosphere: New rock is formed from cooled lava, ash gets into soil and adds nutrients
  38. 38. What is one feature of the atmosphere?
  39. 39. Answer • • • • • Mostly Nitrogen Causes weather Keeps temps stable Protects from radiation Protects from meteors
  40. 40. A closed system exchanges ________ but not __________ with its surroundings
  41. 41. Answer • Energy NOT matter
  42. 42. Give one reason as to why the hydrosphere is an open system
  43. 43. Answer • Water is transferred physically between the hydrosphere and atmosphere
  44. 44. How is the biosphere part of the nitrogen cycle?
  45. 45. Answer • Bacteria fix nitrogen into usable forms for plants, plants absorb it through their roots, then animals eat plants. When living things die, they decay and release nitrogen back into the soil. Another type of bacteria may transfer it back into the atmosphere
  46. 46. Where is one place that Carbon is stored on Earth?
  47. 47. Answer • Ocean • Rock • Living things
  48. 48. How have humans altered the natural balance of the Carbon cycle?
  49. 49. Answer • By burning fossil fuels at high rates and deforestation
  50. 50. How could using too much fertilizer (nitrogen) effect the environment? (be specific)
  51. 51. Answer • Plants use nitrogen to grow, but any unused nitrogen will run off into nearby rivers and lakes and accumulate. Plants in the lake may overgrow, causing an imbalance in the food chain.
  52. 52. How does removing rainforests affect the Carbon cycle?
  53. 53. Answer • The more trees are removed, the less plants there are to take in carbon from the atmosphere

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