1. Question 1 More than 97% of the Earth’s water is found where? The oceans

2. Question 2 The energy that drives the water cycle comes from what? The sun

3. Question 3 More than two thirds of the Earth’s freshwater is found in what? Icecaps and glaciers

4. Question 4 What is the process where plants release water into the atmosphere? Transpiration

5. Question 5 The process by which molecules at the surface of a liquid gain enough energy to change into a gas is called what? Evaporation

6. Question 6 Water that falls to the Earth as snow is called what? Precipitation

7. Question 7 What is happening to the total amount of water on the Earth? It is staying the same

8. Question 8 What needs to happen for a molecule to leave the ocean and enter the atmosphere? It needs to gain energy

9. Question 9 What is the land area that supplies water to a river system called? Watershed

10. Question 10 What makes up a river system? A river and its tributaries

11. Question 11 How do icebergs form? When a glacier reaches the coast and large chunks of ice break off

12. Question 12 What does it mean if something is permeable? There are tiny connected spaces which water or air can get through

13. Question 13 What is a reservoir? A body of water that stores water for human use – it may be manmade or natural

14. Question 14 How do lakes form? By several ways: damming a river, a meander that is cut off, when glaciers passed over an area, in extinct volcanoes, and when there are movements in Earth’s crust

15. Question 15 Where is groundwater found? In the aquifer or saturated zone

16. Question 16 How do people reach groundwater? By drilling wells

17. Question 17 What are the causes of a water shortage? When too little rain falls (drought), too much water is used, or both take place

18. Question 18 What is a point source pollutant? A pollutant that can be traced back to the source

19. Question 19 Why is it important to preserve the Everglades? Because many endangered species live there

20. Question 20 What is a drought? When the rainfall levels are below normal