The Hydrosphere EOG Review
1. Draw the structure of a water molecule below. Label the elements and charges.
2. What does it mean to be a polar molecule?
3. This property is what allows water to “stick” to other water molecules by forming
4. What is surface tension and what property of water allows this to happen?
5. ____________ allows water to “stick” to other substances. Due to this property
water can move up small tubes such as in plants in a process called ___________.
6. What is a solvent?
7. Why is water the universal solvent?
8. Why does ice (the solid state of water) float on water (liquid state)? Why is this
called the density anomaly?
9. What property allows fish, whales, and other organisms to float in water?
10. What property allows water to maintain a stable temperature, even when the air is
11. What is the hydrosphere?
12. About how much of the Earth’s water is ocean?
13. Where can you find the majority of fresh water on Earth?
14. About how much of the Earth’s surface is covered by oceans?
15. What is the largest and deepest ocean on Earth? What is the smallest ocean?
16. ___________ is the concentration of salts in a liquid.
17. What is the difference between and glacier and iceberg?
18. How does groundwater form and where is most of it stored?
19. Where does most of our drinking water and irrigation water come from?
20. What land areas prevent flooding, filter pollutants and sediment out of the water,
and improve water quality?
21. Many _______________ make up river basins. These are areas of land where
water collects and then drains into a single place.
22. What is the difference between and river and tributary?
23. _____________ are materials from the environment (dissolved gases, nutrients,
and minerals) that are used by living things.
24. In organisms, what is the process of respiration and how is it different from
25. What are the two main ways oxygen enters water?
26. How is respiration and photosynthesis different?
27. How does the process of desalination work (explain)?
28. __________ is the study of the physical properties of oceans.
29. What does SONAR stand for and what is it used for?
30. What is an ROV or submersible and why are they used?
31. Types of Ocean Organisms
Group Definition Examples
Plants and animals that live in, on, or
near the ocean bottom.
Small and microscopic organisms that
move with the currents.
Swimming animals that can move
independently of the currents.
32. What are the three distinct life zones in the ocean? Describe each.
33. What is one of the major ecosystems in the neritic zone? Describe this ecosystem.
34. What process brings nutrient-rich water from the deep ocean? Why is this
35. What life zone can you find hydrothermal vents in and what are these vents?
36. What is an estuary and why are these great ecosystems for nurseries for many
37. What are the three roles in food chains and describe each?
38. What is the difference between a food chain and food web?
39. List 3 examples of how aquatic and terrestrial food webs are interconnected.
40. What are the 6 main water quality indicators? Describe each.
41. What is the difference between and chemical and physical indicator?
42. What is a pollutant?
43. Sources of Water Pollution
44. What are the two main nutrients that contribute to pollution and how?
45. Describe how dumping organic waste such as fertilizer can have a chain reaction
on the water quality.
46. What is economic trade-off?
47. How can people help local water issues?
48. What is wastewater?
49. What steps does wastewater go through in the water treatment plant in order to
clean the water before putting it back into the environment?
50. What do some homes have instead of using the water treatment plant?