"Sea and Land Distribution" PPT

Description

"Sea and Land Distribution" PPT

Part One: Import

Gagarin, the first human being to enter space in a spacecraft, said that we gave the earth the wrong name. It should be called "Water Ball" because the earth seen from space is a blue planet.

The earth's surface is "seven parts ocean and three parts land".

Activity: Observe the distribution of land and sea in the following hemispheres, compare the size of the land and sea areas in each hemisphere, and describe the characteristics of the distribution of land and sea on the earth's surface.

Looking from the southern and northern hemispheres: the ocean area is larger than the land area; ________, the land is mainly concentrated in ________, and the Arctic region is ________; the ocean is mainly concentrated in ________, and the Antarctic region is ________.

Viewed from the Eastern and Western Hemispheres: the ocean area is larger than the land area; ________, land is mainly concentrated in ________, and oceans are mainly concentrated in ________.

From the perspective of the land hemisphere and the water hemisphere: the land distribution is concentrated in ________, and the ocean distribution is concentrated in ________; but no matter which hemisphere, the ________ area is more distributed.

Distribution characteristics of land and sea on the earth’s surface:

No matter how the earth is divided into two hemispheres, the ocean area is greater than the land area in either hemisphere.

Sea and land distribution PPT, part 2 content: seven continents

A vast landmass surrounded by oceans is called a continent.

The smaller ones are called islands.

The mainland and its nearby islands together form a continent.

The world's landmass is divided into seven continents: Asia, Europe, Africa, North America, South America, Oceania and Antarctica.

(1) Distribution of the seven continents in the Eastern and Western Hemispheres

1. What are the main continents in the Eastern Hemisphere? What are the main continents in the Western Hemisphere?

Asia, Europe, Africa, Oceania

North America, South America

2. Which continents does the equator pass through?

Asia, Africa, Oceania, South America

3. Which continent spans the most longitudes? What is the continent with the highest latitude?

Antarctica Antarctica

(2) Intercontinental dividing line

The dividing line between Europe and North America: the Denmark Strait

The dividing line between Asia and North America: the Bering Strait

The dividing line between North and South America: the Panama Canal

The dividing line between South America and Antarctica: the Drake Passage

The dividing line between Asia and Africa: Ural Mountains, Ural River, Greater Caucasus Mountains, Turkish Strait

The dividing line between Europe and Africa: the Strait of Gibraltar

The dividing line between Asia and Africa: Suez Canal

Distribution of land and sea PPT, the third part: four oceans

The world's largest ocean - the Pacific Ocean

It accounts for half of the world's total ocean area.

Surrounded by Oceania, Asia, North and South America.

The opening ocean - the Atlantic Ocean

Slightly narrow from east to west, long and narrow from north to south, and slightly "S" shaped, it is the second largest ocean in the world.

Surrounded by Africa, Europe, North and South America.

tropical ocean - indian ocean

Most of it is located in the tropics, with many bays in the north and open waters in the south, with a slightly "triangular" shape.

The highest latitude ocean - the Arctic Ocean

Most of it is located in the Arctic Circle and is frozen all year round.

The smallest ocean in area, spanning the most longitudes and highest latitudes.

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Update Time: 2024-09-08

This template belongs to Geography courseware Business Planet Edition 7th Grade Geography Volume 1 industry PPT template

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