Streambed		Water flows downhill because ___________ of water get pulled down by gravity.
Channel		A type of water energy.
Downhill		Changes of direction of a stream.
Oxygen		A deep ditch or channel cut in the earth.
Rills		A person who studies properties and effects of water.
Waterfall		Channel through which a natural stream of water runs .
Moving Water		A colorless, tasteless, and odorless gaseous gas that humans inhale.
Molecules		The deeper part of a river or harbor.
Sponge		Community of living and non-living things that interact and live with each other.
Continental Divide		Vegetation sometimes acts like a ___________.
Meanders		The watershed of a continent.
Erosion		Water flows in this direction.
Sediment		Place where water drops from high above the ground.
Ecosystem		Happens when there is too much rainfall.
Gully		Channels in soil made by water flowing down over it's surface.
Hydrologist		It is a material like sand or silt that's carried and deposited by wind, or water.