"Polar Regions" PPT courseware 4

Description

"Polar Regions" PPT courseware 4

1. Target Navigation

1 Understand the location, scope, climate conditions, special natural environment of the polar regions, etc. in the polar regions.

2. Be able to use maps, landscape diagrams, and information to summarize the environmental characteristics of the two polar regions, and be able to compare the differences in the natural environment between the two places based on their temperatures.

3. Learn to identify directions on a map centered on the poles.

2. Independent learning

1. The North Pole is located at the northernmost point of the earth, and refers to the vast area north of _____ (Arctic Circle), including most of the _____ ocean, as well as coastal _____, _____ continent and part of the land and islands of _____ continent .

2. Antarctica is located at the southernmost point of the earth. The south latitude of _____ is the vast area south of the Antarctic Circle, including the _____ continent and the surrounding _____ oceans, the Pacific Ocean, and the _____ ocean.

3. The Arctic region is frozen all year round, and the precipitation is _____ than that of the Antarctic region, but not as much as that of the Antarctic region. The wind is _____ than in Antarctica.

4. The _____ area is the coldest place on earth and is known as "_____". It is also known as the "white desert" and "wind bank" on earth. Therefore, the climate characteristics of the Antarctic region can be summarized as: _____, _____, _____ strong winds. The remarkable natural landscape on the sea surface near the Antarctic continent is.

5._____ is the symbol of the Antarctic and _____ is the representative of the North Pole.

Why the temperature in Antarctica is much lower than that of the Arctic

The properties of sea and land are different: Antarctica is mainly continent and covered with ice and snow, which reflects strong sunlight, absorbs less heat and releases more heat, while the Arctic is mainly ocean and the ocean releases heat slowly.

Different altitudes: Antarctica has a high average altitude and is known as the plateau continent. The average altitude is more than 2,000 meters. Affected by the altitude, the temperature is low.

Ocean currents, human activities, etc.………….

Thinking expansion

1. Like Australia, the Antarctic region has been isolated for a long time and has a single environment. Why are there so few ancient animals in Antarctica?

2. Scientists have discovered that Antarctica is rich in coal. Can you explain this phenomenon?

4. Class Summary

Antarctic climate: cold, dry, strong winds

Antarctic scene: ice and snow plateau, white desert, wind bank

Antarctic representative animal penguin

Antarctic range: 66.5°S~90°S

The warm season in Antarctica: November to March of the following year

Arctic climate: The temperature is higher than that of Antarctica; there is more precipitation than Antarctica; and the wind speed is lower than that of Antarctica.

Arctic scene: frozen all year round, icy and snowy

Arctic animal: polar bear

Arctic range: 66.5°N~90°N

Arctic warm season: June to August

5. Practice

1. Read "A Sketch Map of the Antarctic Region" and answer the following questions.

1. Mark the direction of the Earth's rotation with an arrow on the latitude line in the picture.

2. Write the east longitude and west longitude on both sides of the 180° longitude.

3. The ocean in the picture is ①______, ②_______ and ③_______.

The peninsula near A is _____.

2. Read the map of the Arctic region

1. The area near the North Pole indicates the direction of the Earth's rotation.

2 Oceans: ①______②______③______

Continents: A______B______C______.

3.The largest island in the world D______.

4.The dividing line of AC is E______ Strait.

Protecting the polar regions means protecting human beings themselves

March 23 is World Meteorological Day. In order to raise global awareness of the importance of changes in Arctic sea ice and Antarctic ice sheets and promote the international community's protection of polar ecosystems, the World Meteorological Organization established the "International Polar Year". In conjunction with the official launch of the International Polar Year, the World Meteorological Organization has set the theme of World Meteorological Day 2007 as "Polar Weather: Understanding Global Impacts".

Global warming has caused the polar ice to decrease, which not only affects the flora and fauna and indigenous inhabitants of the North and South Poles, but also affects the only planet on which all mankind depends for survival. Therefore, protecting the polar regions means protecting humans themselves.

Class Summary 2

The Antarctic region is a "big warehouse" of natural resources

(1) Mineral resources—rich mineral resources, with coal and iron reserves ranking first in the world;

(2) Solid freshwater resources

(3) Marine biological resources

(4) Original natural environment—“natural laboratory”

The scientific research stations established by our country in Antarctica include: Great Wall Station, Zhongshan Station, and Kunlun Station; the scientific research stations established in the Arctic region include: Yellow River Station.

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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: 2024-09-25

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

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