20 km from the Cape Verde Peninsula and 30 km from Dakar, capital of Senegal, is an amazing natural phenomenon — the Pink lake or Retba, as it is called representatives of the people Wolof, the main ethnic groups in the country. The size of a giant bowl with a bright pink water reaches up to 3 sq. km. the Maximum depth does not exceed 3 meters.
The name of the lake derives from the special color of the water, which ranges from light pink to brown. The reason for the unique color of the water is a large amount of cyanobacteria in the lake are ancient organisms that appeared on Earth 3.5 billion years ago. Surprisingly, except for them in this saturated salt solution no other organic life. The salt concentration in the lake Retba almost 1.5 times more than in the Dead sea – 380 grams per liter. Salt production takes place since 1970.
Now people extract the salt, standing to his neck in water, but 20 years ago the lake was moving without boats, the water level reached the belt. But because mining a huge amount of salt (about 25 thousand tons per year), the depth of the lake was rapidly increasing.
Every morning dozens of local men with the necessary equipment, floating in the middle of the lake and climb in very salty water. They break the salt deposits at the bottom Continue reading
Red lake salt lake in Bolivia
We have already talked about the unusual lakes in the Andes earlier. It was a well-known lake Titicaca. In Bolivia on the high plateau there is still salt and fresh lakes. One of them has the name Colorado Lagoon (Laguna Colorado) or red lake.
It is surrounded by misty cliffs and boiling geysers. The second nearby Laguna Verde (Laguna Verde) has the green color of the water. Next to these lakes, stretches of sea salt. This solar de Juni, a huge salt flat. Once in its place was the waters of the ancient lake. Now only a swift breeze rolls salt dunes on the dune. The thickness of the minerals can reach six meters. Walk on it quite a dangerous occupation, because the salt marsh is possible to fail. As we walking on the frozen lake in winter.
Red lake of the Cordillera
A wonderful place where the land is perceived as a Mirage. The lake shining in the sun sometimes it is just an ice desert. Night stars exactly light up the purple sky and surrounding mountain scenery. Not every fiction writer, describing the planet, Mars has a paint that is of a local nature.
Near Laguna Colorado begins a local landmark national Park Eduardo (Eduardo Avaroa). The lake water is red brick and very salty. The water acquires a red color because of plankton and trace Continue reading
The Abstract of the open lesson on the theme “Lake Baikal”
Synopsis open classes
Topic: lake Baikal – pearl of Siberia.
Preparation for school group
Objective: to acquaint children with the nature of lake Baikal
• Create a synopsis of reservoirs, find them on a map; to acquaint with peculiarities of oz. Baikal, its inhabitants; to teach to identify features of adaptation of animals to specific habitats (fish) ; to establish a simple causal relationship;
• To develop logical thinking, attention, dialog speech; fine motor skills; to increase vocabulary;
• To foster love and respect for nature and native land, to develop environmental activities.
Equipment: map of Irkutsk oblast, photographs and illustrations of the inhabitants of lake Baikal, the model for the structure of the fish cards for the didactic game “That is possible, what is not.”
Dictionary: the spawning, cold-water.
Integration of educational areas: reading of literature, communication, cognition, artistic creativity, socialization, health, physical culture.
Working with the map
-Look at the map. What are blue? (rivers, lakes) .
1. We say it flows.
We’re talking about – she plays.
She always Continue reading