Science Language Students Should Know and Use

Biological dynamics

Changes in ecosystems are based on the numbers, characteristics and behaviors of the organisms in that ecosystem.

Geologic time

A reference to the time period from the beginning of Earth to the present.

Glacier

A large mass of ice slowly flowing over a land mass. It forms in an area where snowfall exceeds melting.

Groundwater

Water found under Earth's surface. This water usually is the source for wells and springs.

Reservoir

A large area where water is stored. Examples include a lake, glacier, ocean, and in the clouds.

Salinity

A reference to the presence of salts in a solution.

Tide

A regular change in the surface level of oceans caused by the gravitational force of the sun and moon.