Video: hydrosphere

The hydrosphere

Here you have a video about the hydrosphere. Watch it as many times as you want, and answer the following questions.

1. What is the hydrosphere?
2. Why is the southern hemisphere called water hemisphere?
3. What is the hydrosphere made up?
4. Apart from hydrogen and oxygen, what is the other element of the oceans and seas?
5. What is the deepest ocean?
6. Where does the rain come from?
7. What is the porcentage of lakes and rivers in the hydrosphere?