Nodule (geology)
Okay kiddo, a nodule is a small rock or mineral that is found underground. Imagine you're digging in the dirt and you come across a little round rock that feels different than the rest of the dirt. That could be a nodule!
Nodules are formed when minerals or rocks get trapped inside mud or sediment at the bottom of the ocean or a lake. Over time, the mud hardens and turns into rock, but the mineral or rock inside stays the same. So even though the nodule is small, it can be really old - sometimes thousands or even millions of years old!
People studying geology like to look at nodules because they can tell us more about what the earth was like a long time ago. They can also be valuable if they contain precious metals or other materials that we use for things like electronics, jewelry, or even medicine.
Nodules are formed when minerals or rocks get trapped inside mud or sediment at the bottom of the ocean or a lake. Over time, the mud hardens and turns into rock, but the mineral or rock inside stays the same. So even though the nodule is small, it can be really old - sometimes thousands or even millions of years old!
People studying geology like to look at nodules because they can tell us more about what the earth was like a long time ago. They can also be valuable if they contain precious metals or other materials that we use for things like electronics, jewelry, or even medicine.