Define landform.
Natural features of the Earth’s surface, such as mountains, valleys, lowlands and volcanoes
Landforms are essential components of the Earth’s geography.
What is a landscape?
The overall appearance of an area resulting from the interaction of landforms, soils, vegetation and changeable elements with human elements
Landscapes can vary significantly based on geographical and human influences.
What is a natural hazard?
Extreme and unusual natural events
Natural hazards can lead to significant impacts on human life and property.
What is a natural disaster?
The impact of a natural hazard on people
Natural disasters can cause widespread destruction and loss of life.
Define crust.
The thin, outer layer of the Earth’s crust
The crust is where we live and contains all terrestrial life.
What is the mantle?
The layer between the Earth’s core and its crust
The mantle plays a crucial role in tectonic activity.
Define fault.
The fracturing or breaking of rock along lines of physical weakness
Faults are often associated with earthquakes.
What is a fold?
The buckling of rock due to pressure
Folds can create mountain ranges and other geological features.
What is an epicentre?
A point on the Earth’s surface that is directly above the centre of an earthquake
The epicentre is often where the most damage occurs during an earthquake.
What are bushfires and wildfires?
Any fire that burns out of control, leading to loss of property, bushland and life
These disasters can be exacerbated by dry conditions and high winds.
Define tropical cyclones.
A large wind event formed over oceans due to warm, humid air from the ocean and colder air from the polar regions meeting
Cyclones can cause extensive damage to infrastructure and agriculture.
What are tornadoes?
A large wind event formed over land due to a mix of warm, humid air and cold air
Tornadoes are smaller but more violent than cyclones.
Define floods.
An overflow of a large amount of water beyond its normal limits, usually caused by heavy rainfall
Floods can lead to significant property damage and loss of life.
What are volcanic eruptions?
When magma erupts from a volcano
Eruptions can vary in intensity and can cause widespread destruction.
Define earthquakes.
When energy that has built up in the Earth’s crust is released
Earthquakes often occur around plate boundaries and fault lines.
What are landslides?
The collapse of a mass of earth or rock from a mountain or cliff
Landslides can cause significant damage to property and infrastructure.
Define sinkholes.
When extra water travels through the ground and dissolves the carbonate rock, causing the ground to collapse
Sinkholes can grow larger and drag surrounding objects into the cavity.
What are tsunamis?
A series of ocean waves caused by underwater land movement
Tsunamis can destroy everything in their path.
What is the Saffir-Simpson Hurricane Wind Scale used for?
Measuring hurricanes based on their maximum sustained wind speed
This scale helps assess the potential damage of hurricanes.
What is the Enhanced Fujita Scale used for?
Measuring tornadoes based on surveyed damage
This scale categorizes tornadoes from EF0 to EF5 based on destruction.
What does the Richter Magnitude Scale measure?
The amount of energy released during an earthquake
This scale quantifies the size of earthquakes.
What is the Volcanic Explosivity Index?
Measured based on volume, cloud height and qualitative observations of eruptions
This index helps classify the explosiveness of volcanic eruptions.
Name the four major landform regions of Australia.
- Coastal lowlands
- Central lowlands
- Great Western Plateau
- Eastern Highlands
These regions are characterized by distinct geographical features.
What are shield volcanos?
Among the world’s largest volcanos with a broad base due to fluid lava
Shield volcanos are typically less explosive than other types.
