Key points: 1  The Australian climate is not just hot â it offers a climate to suit everyone across its eight states and territories. 2  Situated in the southern hemisphere, Australiaâs seasons are at opposite times to the northern hemisphere. 3  Australiaâs tropical region also has a âwetâ and a âdryâ season.
Convection currents are the transfer of heat through the Earth's magma. They can be found in the mantle. The hottest part of the Earth is the core. the heat from the core is transferred into the lower mantle.
Convection is the circular motion that happens when warmer air or liquid â which has faster moving molecules, making it less dense â rises, while the cooler air or liquid drops down. Convection is a major factor in weather. The sun heats the earthâs surface, then, when cooler air comes into contact with it, the air warms and rises, creating an upward current in the atmosphere. That current can result in wind, clouds, or other weather. Convection currents within the earth move layers of magma, and convection in the ocean creates currents.