Antarctica: 90 Degrees South Western Reserve Public Media

Introduction

How to Use Antarctica: 90 Degrees South

Did You Know?

Exploration

Timeline

Glossary

Literature Connection

Maps

Antarctica: 90 Degrees South Credits

Glossary

Algae — aquatic, non-vascular plants such as seaweed, pond scum and stoneworts

Altitude — the vertical elevation of an object above the surface

Antarctic Convergence — where the Antarctic surface water comes into contact with the sub-Antarctic surface water (which is warmer). The waters do not mix. The Antarctic surface water sinks below the sub-Antarctic surface water. This is also affected by winds.

Aurora Australis — an aurora (light show) that occurs in earth's southern hemisphere — called also southern lights

Bacteria — microscopic plants having round, rod-like, spiral or filamentous single-celled or non-cellular bodies often aggregated into colonies living in soil, water, organic matter or the bodies of plants and animals

Biodiversity — an environment as indicated by numbers of different species of plants and animals

Biome — a major ecological community type (tropical rain forest, grassland or desert)

Climate — the average course or condition of the weather at a place, usually over a period of years as exhibited by temperature, wind velocity and precipitation

Conservation — planned management of a natural resource to prevent exploitation, destruction, or neglect

Continental crust — the land crust of the earth

Core samples — drillings into the earth that show the layering of material in the earth's crust

Continent — one of the six or seven great divisions of land on the globe

Convergence — the act of moving toward each other and colliding

Crevasse — a narrow opening resulting from a split or crack (as in a cliff)

Divergence — the act of moving away from each other

Expedition — a journey or excursion undertaken for a specific purpose

Exploitation — to make use of meanly or unjustly for one's own advantage

Extinct — no longer existing

Fungi — any group of parasitic lower plants that lacks chlorophyll and includes molds, rusts, mildews, smuts, mushrooms and yeasts

Geology — a science that deals with the history of the earth and its life especially as recorded in rocks

Glacier/ice sheet — a large body of ice moving slowly down a slope or valley or spreading outward on a land surface

Global warming — an increase in the average temperature of the earth

Habitat — the place or environment where a plant or animal naturally or normally lives and grows

Iceberg — a large floating mass of ice detached from a glacier

Insulation — prevents transfer of heat, electricity or sound

International Geophysical Year — an 18-month period from July 1957 through December 1958, during a period of maximum sunspot activity, designated for cooperative study of the solar-terrestrial environment by the scientists of 67 nations

Katabatic Winds — the mountainous landscape channels and forces the air to flow down the slopes, and gravity causes it to strengthen; these are called inversion winds

Lichens — any plant made up of an algae and a fungus growing in symbiotic association on a solid surface such as a rock.

Mosses — a bryophytic plant having a small leafy, often tufted stem bearing sex organs at its tip

Native species — belonging to or associated with a particular place or vicinity

Nematode worms — parasitic worms in animals and plants or free-living in soil or water

Nunatak — a hill or mountain completely surrounded by glacial ice

Oceanic crust — the crust underlying the ocean basin

Ozone — oxygen formed naturally in the upper atmosphere by photochemical reaction with solar ultraviolet radiation; it is a major agent in the formation of smogs

Penguins — erect, short-legged, flightless aquatic birds of the southern hemisphere

Polar — of or relating to a geographical pole or the region around it

Polar Cap/Polar Circle — either of the two parallels of latitude, each at a distance from a pole of the earth equal to about 23 degrees 27 minutes

Plankton — a passively floating or weakly swimming, usually minute, animal

Plate tectonics — the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle; much of the earth's seismic activity occurs at the boundaries of these plates

Precipitation — a deposit on the earth of hail, mist, rain, sleet or snow

Protozoa — a unicellular animal with complex life cycles, represented in almost every kind of habitat and some of which are serious parasites of man and domestic animals

Rotifers — microscopic, many-celled aquatic invertebrate animals that have the appearance of rapidly revolving wheels

South Pole — the southernmost point of the earth

Species — a class of individuals having common attributes and designated by a common name

Sustainable — a method of harvesting or using a resource so that the resource is not depleted or permanently damaged

Tardigrades — a microscopic arthropod with four pairs of legs that lives in water or damp moss

Threatened Species — species at high risk of extinction

Treaty — an agreement or arrangement made by negotiation

Tundra — a level or rolling treeless plain that is characteristic of arctic and subarctic regions; consists of black mucky soil with a permanently frozen subsoil; has a dominant vegetation of mosses, lichens, herbs and dwarf shrubs

Viable — capable of growing or developing

Wind chill — how cold the air feels taking into account the temperature and the wind speed

 
 
 
 
 
 
 
 
 
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