Okay kiddo, an earth block is basically a brick but instead of being made of just regular clay, it's made of a mixture of soil, sand, and sometimes even straw.
These materials are mixed together and then compacted really hard into a brick-like shape. The best part is that you don't need any fancy equipment to make them - just some muscle power and a sturdy mold to shape them.
Earth blocks are also great for the environment because they don't need to be fired like regular bricks, which creates a lot of pollution. They're also very energy-efficient because they help keep your house cool in the summer and warm in the winter.
So, in simple terms, an earth block is a special kind of brick that's made from natural materials that don't harm the environment and can help keep homes comfortable.