The Baikal: is it a lake or a sea?

Содержание

1. The Baikal: is it a lake or a sea?
2. Quotation:We can hardly help repeating: how good
3. “Sacred sea”, “sacred lake”, “sacred
4. The Baikal in figures:Age: about 25 million
5. The Baikal as a lake: It
6. It is much smaller than
7. The kind of storm, known
8. As
9. Conclusion: On the one hand, the
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Quotation:We can hardly help repeating: how good it is to have Baikal! Regal and untamed, mighty, rich, majestic and beautiful in so many, many ways! (V. G. Rasputin)

Слайды и текст этой презентации

Слайд 1The Baikal: is it a lake or a sea?
Chernova Anastasia

the 7 form
Irkutsk region
t. Cheremkhovo
Teacher: Myasnikova I. N.

The Baikal: is it a lake or a sea?Chernova Anastasia the 7 formIrkutsk regiont. CheremkhovoTeacher: Myasnikova

Слайд 2Quotation:

We can hardly help repeating: how good it is to

have Baikal! Regal and untamed, mighty, rich, majestic and beautiful

in so many, many ways!

(V. G. Rasputin)

Quotation:We can hardly help repeating: how good it is to have Baikal! Regal and untamed, mighty, rich,

Слайд 3 “Sacred sea”, “sacred lake”, “sacred water” – these

names have been given to Lake Baikal since time immemorial

by the indigenous population, by Russians who came to these shores in the 17th century, and by foreign travelers in their admiration for its beauty.

But is it really a lake ? Or, may be, it is a sea? We shall try to answer this question.

“Sacred sea”, “sacred lake”, “sacred water” – these names have been given to Lake Baikal

Слайд 4The Baikal in figures:
Age: about 25 million years
Length: 636 km
The

maximal width: 79,5 km
The minimal width: 27 km
Length of the

coastal line: 2000 km
The maximal depth: 1637 m
The total area: 31500 km²
The volume: 23000 km³
Number of flowing rivers: 336

The Baikal in figures:Age: about 25 million yearsLength: 636 kmThe maximal width: 79,5 kmThe minimal width: 27

Слайд 5The Baikal as a lake:
It may be called

a lake because its water is fresh and it is

surrounded by a land.
So, as a lake, the Baikal is the world's deepest lake. The water in it is so clear that if you look down you can count the stones on the bottom (through 60 metres of water!).
It is the same type of lake as Tanganyika in Africa.

The Baikal as a lake: It may be called a lake because its water is fresh

Слайд 6 It is much smaller than the Baltic Sea,

but there is much more water in it than in

the Baltic Sea. Its depth – the depth of a sea or even
an ocean!

The Baikal as a sea:

The Baikal has not only separate islands (Olkhon is the biggest of them) but also some “archipelagoes” (Ushkanyi Islands, for example).

It is much smaller than the Baltic Sea, but there is much more water in

Слайд 7 The kind of storm, known as the sarma,

can tear the roofs off the houses in the shoreline

villages, to overturn launches and to throw sheep down the cliffs into the roaring waters. The sarma reaches a speed of forty or more metres a second.

The Baikal, as a sea, has different kinds of winds – almost from every river’s valley. The most famous of them are called after the rivers – the barguzin, the sarma, the kultuk.

The kind of storm, known as the sarma, can tear the roofs off the houses

Слайд 8 As a sea, the

Baikal has a great variety of

living creatures. It hosts 1,085 species of plants and 1,550 species and varieties of animals.

More than 80% of the animals are endemic.
Among them there are such animals (usually known in seas) as sponges (the Baikal sponge), seals (Nerpa), crustaceans (the Baikal epishura) etc.

The golomyanka (oil fish)

As a sea, the Baikal has a great variety of

Слайд 9Conclusion:
On the one hand, the Baikal can be

called a sea because of its area, depth and wildlife.

On the other hand, it is a lake because of its fresh water. But scientists say that the Baikal is a future ocean because it is widening and becoming deeper!