Earth's oceans move in currents. Currents are like streams or rivers within the ocean that move from one place to another around the Earth. What makes parts of the ocean move in river-like streams or rivers? The ocean is not same everywhere. In some places it is saltier than in others. In some places it is warmer than it is in others.


In this investigation, you will explore how salt content affects how water moves.


What you need:

What you do:

Think about what you saw and try to answer these questions:

Go here to find answers to these and questions of your own about Earth's ocean currents.


Adapted from: Nye, Bill. Bill Nye the Science Guy's Big Blue Ocean. New York: Hyperion Books for Children: 1999.