Almost three-fourths of the Earth's surface is covered in water. All living
things depend on water for their survival.
Water, Water Everywhere
Think about the neighborhood where you live or go to school. Is there
a body of water nearby, such as an ocean or river? That's part of the hydrosphere.
Water in the oceans, clouds, lakes, rivers, and even underground is connected
through the water cycle. Water is used and
reused again and again by living organisms.
If you surf, swim, ski or snowboard, you come into direct contact with
the hydrosphere. In fact, you could not spend more than 48 hours without
drinking water. Without it you'd be sunk.
Human beings can affect the world's water supply. For example, in the
USA we consume 300 billion liters (79 billion gallons) of water every single
Can you think of other ways that we affect the world's watery sphere?
How could you conserve water in your home?
The following environmental educational activities were developed by
students participating in the museum's UniTY