Glaciers are rivers of ice that move slowly, while ice sheets are masses of glacier ice greater than 50,000 square kilometers covering surrounding land. Glaciers form where annual snowfall exceeds melting and certain climatic conditions exist, allowing more snow to accumulate than melt each summer. Ice sheets only exist in Antarctica and Greenland, where winter snow does not fully melt by summer. Approximately three quarters of Earth's freshwater is stored as glaciers and ice sheets, which are the largest freshwater reservoirs on the planet.

1. GLACIERS & ICE SHEETS By Paulina Vantha 5thWester

2. WHO/WHAT GLACIERS: Are basically rivers of ice that move very slowly. ICE SHEETS:Mass of glacier ice that covers surrounding land & is greater then 50,000 square kilometers. Also called, “continental glaciers”

3. WHEN GLACIERS: Amount of snow that falls must be more than the amount of snow that melts each year. ICE SHEETS: Snow falls in winter doesn’t melt all the way in summer.

4. WHERE GLACIERS: Founded where large amounts of snow falls each year and is coldly around. *Mostly founded in Antarctica & Greenland, but can be founded on almost all continents even Africa! ICE SHEETS: Only current ice sheets are in Antarctica & Greenland (cover most of these two)

5. WHY/HOW GLACIERS: Certain climatic & geographic conditions must be present for glaciers to exist. Allows more snow to accumulate on glaciers in winter than melting it in the summer. ICE SHEETS: Where snow falls in winter does not melt entirely over the summer!

7. Largest reservoirs of freshwater on our planet.

10. http://www.sciencedaily.com/articles/i/ice_sheet.htm

11. http://nsidc.org/quickfacts/icesheets.html

12. http://www.co.weber.ut.us/icesheet/

13. http://jove.geol.niu.edu/faculty/fischer/429_info/429trips/NIF/Glaciers.htm