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About Ralph Salier-Hellendag
Expertise
Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming.

Experience
Science Fair Judge for many years and have helped several students get to state level competition. Most recently 2 of my students received state level awards and one went on to the nationals in Washington DC.

Education/Credentials
BA Archaeology - Anthropology
MA Business Anthropology

 
   

You are here:  Experts > Science > Science/Nature for Kids > Science for Kids > Freshwater & Saltwater

Topic: Science for Kids



Expert: Ralph Salier-Hellendag
Date: 1/29/2008
Subject: Freshwater & Saltwater

Question
What is the theory for saltwater lakes?

Answer
Suki,

Most saltwater lakes have no outlet. In such cases, the evaporation of the water in the lake leads to the slow salinization of the lake.  Many soils have salts in them and when it rains, these salts disolve and then flow into the creeks and rivers flowing into the lake.  Since the salt remains in solution, as  the water evaporates, the lake becomes more and more salty.  The Dead Sea, Salt Lake and the Caspian Sea are examples of this.  

Some lakes are saltwater but are directly connected  to the ocean and the water comes from the ocean.  An example of this is Bra 'dor Lake in Nova Scotia Canada.

Fresh water lakes all have outlets which allows any salts to flush out over time.

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