Hydrosphere and Oceanography - Question Bank
1. What is the term for the process by which dissolved salts are removed from seawater, typically through evaporation and precipitation cycles on land?
2. The largest island in the world, Greenland, is surrounded by which ocean?
3. What is the collective term for all the living organisms in a particular marine environment?
4. Which process describes the conversion of dissolved carbon dioxide in seawater into bicarbonate ions and carbonate ions?
5. What is the term for the average state of weather over a long period in a particular region?
6. The 'Humboldt Current' (or Peru Current) is a cold current that affects the marine life along the coast of:
7. What is the deepest part of the Arctic Ocean?
8. Which of the following is a direct consequence of increased ocean temperatures?
9. What is the term for the solid material that forms the seabed?
10. The process of water moving from a region of higher concentration to a region of lower concentration across a semipermeable membrane is called:
11. What is the name of the underwater mountain range that runs through the Atlantic Ocean?
12. Which of the following is a type of marine ecosystem characterized by fluctuating salinity levels?
13. What is the term for the gradual increase in ocean temperature with depth?
14. The 'Gulf Stream' is a warm ocean current that significantly influences the climate of which region?
15. What is the term for the boundary between two different water masses in the ocean?
16. Which type of wave is generated by underwater earthquakes or volcanic eruptions and can cause significant coastal damage?
17. What is the main reason for the difference in temperature between the surface waters and the deep waters of the ocean?
18. What is the term for a large area of stagnant, slow-moving water, often found in bays or estuaries?
19. Which ocean borders Africa to the west and South America to the east?
20. What is the term for the volume of water that flows past a specific point in a given amount of time, often used to measure ocean currents?
21. What is the name for the layer of the ocean where sunlight cannot penetrate?
22. Which of the following is a major contributor to the oxygen content of the atmosphere, with a significant portion produced by marine phytoplankton?
23. What is the zone of the ocean extending from the low tide line to the edge of the continental shelf called?
24. Which of the following is a characteristic feature of a mid-ocean ridge?
25. What is the primary cause of ocean waves?
26. The 'thermohaline circulation' is driven by differences in:
27. What is the term for a long, narrow, deep depression on the ocean floor with steep sides?
28. Which ocean current flows along the west coast of North America and is generally cold?
29. What percentage of the Earth's surface is covered by water?
30. The process by which water vapor from the ocean surface is converted into liquid water, forming clouds, is called:
31. What is the scientific study of the oceans called?
32. Which gas is the most abundant in the Earth's atmosphere and plays a role in the formation of carbonic acid in the oceans?
33. What is the deepest part of the ocean floor called?
34. The phenomenon where ocean water increases in acidity due to the absorption of atmospheric carbon dioxide is known as:
35. What is the term for a large body of salt water that is smaller than an ocean?
36. Which of the following is NOT a major ocean basin?
37. What is the primary driving force behind surface ocean currents?
38. The 'Great Pacific Garbage Patch' is an example of what type of ocean pollution?
39. What is the name for the large, circular systems of ocean currents that rotate clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere?
40. Which layer of the ocean receives the most sunlight and is most productive for marine life?
41. What is the average salinity of the world's oceans, typically expressed in parts per thousand (ppt)?
42. The 'Ring of Fire', a zone of frequent earthquakes and volcanic eruptions, is primarily located around the edges of which ocean?
43. What phenomenon describes the vertical movement of cold, nutrient-rich water from the ocean depths to the surface?
44. Which type of tide occurs when the Sun, Moon, and Earth are aligned, resulting in the highest high tides and lowest low tides?
45. The rise and fall of sea levels caused by the gravitational forces of the Moon and Sun is called:
46. Which ocean current is known for bringing cold water from the Arctic towards the equator?
47. What is the term for the continuous movement of ocean water in a specific direction?
48. The deepest known point in the Earth's oceans is located in which trench?
49. What is the primary source of salinity in the oceans?
50. Which of the following is the largest ocean on Earth?