Geothermal energy is when we use hot water and steam from the earth to make electricity. It's like your parents making tea by boiling water in a kettle on the stove. Only instead of a stove, we use hot rocks and the Earth's core to heat the water.
Central Australia is a very dry and hot place where the ground is full of rocks and dirt. Scientists are exploring this area to find hot water underground. They dig deep holes into the ground to find the hot water. This is called drilling.
When they find the hot water, they pump it up to the surface and use the steam to spin a turbine, which makes electricity. That electricity can be used to power homes and businesses.
The good thing about geothermal energy is that it doesn't use any fuel like coal or natural gas, which can be bad for the environment. It also doesn't create any pollution, so it's a very clean way to make electricity.
Exploring for geothermal energy can be expensive, but if we find a good source of hot water, it can be a great way to create electricity and help the environment.