Melted water from glaciers that flow in tunnels under the ice.
Water containing a high concentration of calcium and magnesium.
Water held underground in the soil or in pores and crevices in rock. This water makes up 22% of the fresh water on the planet.
Technique for separating solutions that involves boiling and condensation.
The measurement of how warm or cold something is.
The wearing away and transporting of rock fragments and soil by moving water.
One of the most diverse and richest ecosystems. Here freshwater from rivers and streams mixes with the salt water of the ocean to form brackish water.
The deepest parts of the ocean, receiving little to no light and containing little oxygen. Its far from shore so not many nutrients are available for plants, though many animals inhabit this zone.
Underwater volcanoes that don't come all the way to the ocean's surface.
Large moving bodies of ice; can be meters or even kilometres thick.
Amount of dissolved salts in water.
Eroded rock fragments and soil carried by water or wind.
Daily change in water level of the oceans.
Observe, check, or keep track of something for a specific purpose.
A description of a stream or river's characteristics including the rate of water flow and the slop of the bed.
Large moving bodies of ice; can be meters or even kilometres thick.
In water, circular movement of water particles that causes a change in pattern that moves along the water's surface; the pattern can move over long distances but the water particles do not.
One of the criteria for testing our drinking water. Refers to how acidic or basic the water is.