Water on Earth
Science

A compartment within a boat that holds water, which is used to provide stability for a vessel
Ballast water
A compartment within a boat that holds water, which is used to provide stability for a vessel. Ballast water is the water carried in tanks of ships to improve stability and balance during their voyage.

A graph showing the temperature and pressure at which a substance exists as a solid, liquid, and vapor
Phase diagram
A graph showing the temperature and pressure at which a substance exists as a solid, liquid, and vapor. Phase diagram. A phase diagram shows the conditions under which a substance changes states, like solid, liquid, or gas.