"Polar Regions" PPT courseware 3

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"Polar Regions" PPT courseware 3

snow-covered areas

There are very special regions at the northern and southern ends of the earth: the Arctic and Antarctic regions. The Arctic region, located at the northernmost point of the Earth, is the vast area north of 66.5° north latitude (the Arctic Circle), including most of the Arctic Ocean, as well as the land and islands of Asia, Europe, and North America along the coast; the Antarctic region, located at the southernmost point of the Earth, It is the vast area south of 66.5° south latitude (Antarctic Circle), including the Antarctic continent and the surrounding ocean. Both polar regions are cold worlds covered with ice and snow. The Antarctic region is the coldest region on earth, and it is very cold even in the warm season (from November to March of the following year). The Antarctic region is known as the "Ice and Snow Plateau". Most places are covered with thick ice, with the average thickness of the ice being more than 2,000 meters. Icebergs are a remarkable natural landscape on the sea surface near the Antarctic continent. They are formed when the glaciers of the Antarctic continent slide down and break into the sea. According to statistics, the glaciers in the ocean around the Antarctic continent are approximately more than 10,000 cubic kilometers, which is a huge reservoir that humans can utilize.

3. Summarize and compare the natural environment characteristics of the Arctic and Antarctic regions.

Reference answer: Antarctica is the area south of 66.5 latitude south, located at the southernmost point of the earth, including the Antarctic continent, and the surrounding oceans. The area north of 66.5 latitude north of the Arctic, located at the northernmost point of the earth, includes most of the Arctic Ocean, as well as the three continents of Asia, Europe, and North America along the coast. land and islands. The Arctic region is not as cold as the Antarctic.

The reasons are as follows: ① The Antarctic is mainly land, and the Arctic is mainly ocean. The land releases heat and cools, and the cooling rate is greater than that of the ocean. ② The Antarctic region has a higher altitude than the Arctic region. ③ The sunshine time in the Antarctic region is shorter than the Arctic region.

Protection and peaceful use of the polar regions

There are a large number of whales living in the waters around Antarctica. In recent years, whales in the Antarctic region have been in crisis due to indiscriminate hunting. Polar bears, seals, sea lions, walruses and other animals in the Arctic are also indiscriminately killed by people. Environmental protection in polar regions has been put on the agenda. In order to protect the ecological environment of Antarctica and use Antarctica for peaceful purposes, in December 1959, 12 countries including Australia and Argentina signed the Antarctic Treaty. my country officially joined the Antarctic Treaty in 1983.

After-class exercises: Reading pictures and filling in the blanks (1-7)

1. The Arctic region includes most of the ______ Ocean, as well as the land and islands of Asia, ______, and North America along the coast.

2. The coldest area on earth is _________, known as the "_____ plateau".

3. The Antarctic region is known as the “__________”, “__________” and “wind bank” on the earth.

4. The animals unique to the Arctic region are ________, and the animals unique to the Antarctic region are ________.

5. Our country has established _________, _________ and _________ scientific research stations in Antarctica. The stations are all established in February because February is the ____ season in Antarctica.

6. Read the map of the Arctic region and complete the following requirements.

Continents: A_______, B_______, C_______;

Strait: D______________;

Island: E_______; peninsula: F_______.

Country: ①_______, ②_______, ③_______;

Ocean: ④_______, ⑤_______.

Strait D is the dividing line between _______ continent and _______ continent, connecting the _______ ocean and the _______ ocean.

Among countries ①, ②, and ③, the one with the largest territory is _______, and the one with the smallest population density is _______.

Both countries C and A have vast forests, and the climates in both countries are dominated by ________.

Keywords: polar region teaching courseware, New People's Education Edition seventh grade geography PPT courseware, second volume, seventh grade geography slide courseware download, polar region PPT courseware download, .ppt format

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"Polar Regions" PPT courseware download:

"Polar Regions" PPT courseware download Part One: Ice-covered regions There are very special regions at the northern and southern ends of the earth: the Arctic and Antarctic regions. The Arctic region, located at the northernmost point of the Earth, is the vast area north of latitude 66.5 (Arctic Circle).

"Polar Regions" PPT download:

"Polar Regions" PPT Download Part One: Learning Objectives: 1. Use maps to tell the latitudes, sea and land locations of the North and South Poles. 2. Use data to describe the special characteristics of the natural environment in the polar regions. 3. Understand scientific expeditions in the Antarctic region. 4. Name two...

"Polar Regions" PPT:

"Polar Regions" PPT Part One Content: Introduction of new courses Course standards 1. Understand the special natural environment of the polar regions. 2. Understand the reasons for carrying out scientific expedition activities and environmental protection in the polar regions. 3. Cultivate the concept of sustainable development. 4. Stimulate scientific learning..

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Update Time: 2024-07-04

This template belongs to Geography courseware People's Education Edition Geography for Seventh Grade Volume 2 industry PPT template

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