What makes Australia unique?
While Australia is part of a global community, there are many features of the physical and human environments that make our country unique. This means that they do not exist anywhere else in the world. Taken together, these features give our country an identity which is readily recognised around the world as Australian.
-world's lowest continent
-driest inhabited continent
-few large rivers and little runoff
-rich in minerals
-world's largest island
-world's largest coral reef
-world's largest sand island
-vegetation dominated by 2 types of trees: eucalyptus and acacia
-globally significant, ancient rainforests
-unique mammal fauna
A hazard is an event or object that is a potential source of harm to a community.
A disaster occurs as a result of a hazardous event that dramatically affects a community.
Climate is the average conditions that occur over longer periods of time.
Weather is the day to day conditions of the atmosphere.
High pressure systems
Sinking air, anti-clockwise rotation, wind spirals outwards, generally fine weather, gentle winds.
Low Pressure systems
Rising air, clockwise rotation, wind spirals inwards, generally cloudy weather and good chance of rain, relatively strong winds
Isobars- lines joining places of equal atmospheric pressure
Wind strength and direction- shown using lines with small barbs or tails. Winds are named after the direction they come from.
Cold Front- Separates warm and cold air, with the cold air behind the front
Warm front- Separates warm and cold air, with the warm air behind the front
Tropical cyclones are intense low pressure systems that form over tropical waters. They are usually accompanied by gale-force winds and torrential rainfall.
Cyclones from in areas where there are ocean temperatures of 26 degrees of above. The air above the warm oceans is...