1. Welcome to Marine Biology 
Please:
Pick up the sheets from the front
Have a seat where you would like

2. Water
An introduction

3. What do you know about water?
How much of the Earth do you think is covered with water?
Why is water important?
How do you use water?
How much water do you use each day?
How do you know if water is good quality?
Would you drink water from a local farm pond or creek? Why or Why not?
Would you drink water from a local river? Why or Why not?
Would you drink water from the ocean? Why or why not?

4. Spin the globe Take turns spinning the globe with your eyes closed
At the end of each spin randomly point to the globe with your index finger
Record the number of times your index finger touches land
Record the number of times your index finger touches water
Calculate the percentage of time your index finger touched water
How does this relate to water distribution on our planet?

5. A model of water distribution
10 gallon tank = all water on earth
4 cups = freshwater
Tank = saltwater
1 cup= unfrozen fresh water
3 cups = water frozen in ice caps and glaciers
1 drop of water = available for use
Blue water (1 cup) = polluted, inaccessible, too costly to transport