"Polar Regions" PPT courseware 5

"Polar Regions" PPT courseware 5

learning target:

1. Use the map 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. Discuss the importance of environmental protection and the role of peace in the polar regions.

Differences between Antarctic and Arctic regions:

Sea and land conditions

Antarctica is the Antarctic continent in the middle, surrounded by the Pacific, Atlantic and Indian Oceans

The Arctic is the Arctic Ocean in the middle, surrounded by the land and islands of Asia, Europe, and North America.

climate conditions

Antarctica has low temperatures, little precipitation, and strong winds

The Arctic is frozen all year round, but not as cold as the Antarctic

resource status

Antarctica minerals, glaciers, marine life, pristine natural environment

The Arctic mainly contains mineral resources (oil, natural gas, coal, iron, etc.)

Why is the Antarctic colder than the North Pole?

①The heat capacity of the ocean is larger than that of the land. The cold and heat of the ocean change slowly, while the cold and heat of the land change drastically;

②The terrain of Antarctica is high, and the wind blows from high to low, and the wind is strong. In the Arctic Ocean area, it is high around and low in the middle, with less wind;

③Antarctica is covered with thick ice, and most of the solar radiation is reflected;

④The Arctic Ocean region is low-lying, covered with less ice, absorbs more heat from sunlight, and is affected by the Atlantic warm current.

Meridians indicate north and south, so follow the meridian to determine the north-south direction;

The directions of points on the same meridian are true north and true south. The one closest to the North Pole is in the north, and the opposite is in the south.

The circles are lines of latitude, and the lines of latitude indicate east and west, so determine east and west along the lines of latitude, mark the direction of the earth's rotation at the North and South Pole, and determine the east-west direction.

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 human beings live. Therefore, protecting the polar regions means protecting humans themselves.

whimsical

An architect wants to build a house with windows all facing north. Do you think it is possible? If possible, where should it be built?

If it can be done, it should be built on the South Pole.

brain teasers

Why were the two scientific expedition stations in my country chosen to be established in February?

Because February is the warm season in the Antarctic region, most areas are in the polar day period, which is convenient for work and life.

true or false

Antarctica is far away from other continents and isolated at the southernmost point of the earth. In recent years, some people have said that components of the chemical pesticide DDT have been found in Antarctic penguins.

Do you think the above statement is true? If true, what does this mean?

It is true, it shows that the earth is a whole, and if there is a problem in any part, it will affect other areas;

Or it means that the Antarctic region, especially its surrounding environment, has been polluted; etc.

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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..