What is the dirt at the bottom of a lake called?
What is the dirt at the bottom of a lake called? Silt is the super-fine dirt that you might see at the bottom of a lake or river. When your feet touch silt it feels slimy, and once it's stirred it up the water looks muddy.
What are the three layers of a lake called?
The surface layer of warm water is called the epilimnion. The cold layer below the epilimnion is called the hypolimnion. And the two layers are separated by a thinner layer of water - the thermocline (or metalimnion) - that quickly changes temperature with depth.
What are the 4 zones of a lake?
So, the four zones of a lake are: the nearshore or littoral zone, open water or limnetic zone, deep water or profundal zone, the benthic zone or lake floor. The different conditions, such as the amount of light, food, and oxygen in each of the lake zones, affect what kind of organisms live there.