Unit 1 SAC 1 Glossary Terms Flashcards
Absolute Location
Refers to the exact location on earth of a place for example latitude and longitude, postal address.
Relative Location
Refers to the distance and direction from one place to another. The use of place names, landmarks and regions helps to specify the relative location of one place by comparing to the location of another place.
Distribution
The arrangement of features or objects on the Earth’s surface.
Spatial Distribution
The degree to which two or more phenomena are similarly distributed or arranged on the Earth’s surface.
Scale
As the size of something compared to something else.
Movement
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A change in location of phenomena such as people, goods and ideas through travel or flow.
Hazard
A situation with the potential to cause harm to people and/or the environment.
Hazard Event
When a hazard is realized.
Disaster
When a hazard is deemed severe enough by a recognised authority.
Hazard Vulnerability
Refers to the characteristics and circumstances of a community, system or asset that make it susceptible to the damaging effects of a hazard.
Natural Hazard
A naturally occurring hazard that is not caused by human activity. Human activity may influence the severity but not the occurrence.
Risk
The likelihood of a hazard event occurring. Risk is often expressed as a statistical probability and is independent of the threat of what happens when the event actually occurs.
Hydro-meteorological Hazard
Threats due to atmospheric conditions including floods, bushfires, cyclones, hurricanes.
Geological Hazard
The threat from natural processes such as volcanic activity and earthquakes that release enormous amounts of energy stored in the Earth’s crust or even deeper in the mantle.
Technological Hazard
Threats either initiated by humans or humans have played a significant role in their development such as air pollution and oil spills.
Biological Hazard
Threats from lifeforms including infectious diseases, water-borne diseases, plant and animal invasions.
Spatial Technology
A system for capturing, storing, checking, integrating, manipulating, analysing and displaying data, which are spatially referenced to the Earth. For example Global Position Systems (GPS).
Geographical Information System (GIS)
A framework to organize, communicate, and understand the science of our world
Gross Domestic Product (GDP)
The is the standard measure of the value added created through theproductionof goods and services i.n a country during a certain period
Crown Fire
When a fire is in the tree canopy.
Surface Fire
When the fire is in the bushes. It has not reached the canopy.
Ground Fire
These fires are underground. They are fuelled by coal and tree roots
Vector
An organism that does not cause the disease itself but which spreads infection by acting directly as host.
Malaria
Malaria is a life-threatening disease caused by parasites that are transmitted to people through the bites of infected female Anopheles mosquitoes. It is preventable and curable. In 2019, there were an estimated 229 million cases ofmalariaworldwide
