* Velocity is a vector: It has both speed and direction. So, a river flowing east at 5 mph has a different velocity than a river flowing south at 5 mph.
* Water moves in many ways:
* Still water: A lake or a calm ocean has a velocity of 0.
* Flowing water: Rivers, streams, currents in the ocean all have different velocities depending on their speed and direction.
* Waves: Waves move water up and down, but the water itself doesn't travel far. The velocity of a wave depends on its speed and direction.
* Tsunamis: These are large, fast-moving waves that can have extremely high velocities.
To determine the velocity of water, you need to know:
* Where is the water? (River, ocean, lake, etc.)
* What is the water doing? (Flowing, still, in a wave, etc.)
* What is the speed of the water?
* What is the direction of the water?
Example: "The velocity of the Mississippi River at the point where it flows past New Orleans is approximately 2 mph in a southerly direction."
