The process in which water continuously moves from Earth’s surface into the atmosphere and back again.
Water cycle
The mixture of gases that surround a planet.
Atmosphere
The place at which land masses meet the ocean.
Coastline
Water that falls from the air to Earth’s surface.
Precipitation
The solid portion of Earth.
Geosphere
The process by which a gas changes into a liquid.
Condensation
All the living things on Earth.
Biosphere
The process by which a liquid changes into a gas.
Evaporation
A set of connected things forming a complex whole.
system
All of Earth’s water, taken together in all states of matter.
Hydrosphere