"Continents and Oceans" Land and Ocean PPT Courseware 4

"Continents and Oceans" Land and Ocean PPT Courseware 4

learning target

Use maps to illustrate the distribution characteristics of global sea and land, and remember the area and proportion of sea and land

Use maps to identify basic concepts such as continents, continents, peninsulas, islands, oceans, seas and straits

Master the names, locations, outlines and distribution characteristics of the seven continents and four oceans, and be able to accurately and standardly fill maps

Understand the process of human exploration of the earth, and generate curiosity and exploration spirit

Reading self-study:

What is the area and proportion of land and sea on the earth's surface? What is the distribution situation on land and sea?

In which hemisphere are the land and oceans mainly concentrated?

Are the Arctic and Antarctic areas surrounded by land or ocean?

What are the distribution characteristics of the world's oceans and land?

Debate: Earth? water polo?

Party A: The home we live in should continue to be called "Earth"

Party B: "Earth" should be renamed "water polo" to be more accurate

Looking from the Eastern and Western Hemispheres: land is mainly distributed in the Eastern Hemisphere, and oceans are mainly distributed in the Western Hemisphere.

Viewed from the North and South Pole: the Arctic region is an ocean and the Antarctic region is a piece of land.

seven continents and four oceans

1. Understand the following concepts:

Continent: a vast land mass

Largest continent: Eurasia

Smallest continent: Australia

2. Seven Continents

Asia, Africa, North and South America, Antarctica, Europe and the Ocean

Three and four oceans

Fill out the form: Compare the Suez Canal and the Panama Canal

Select: The continents that span the most longitudes are:

A. North America B. Asia

C. Oceania D. Antarctica

Suez Canal: Located in the northeastern part of Egypt on the Isthmus of Suez connecting the two continents of Asia and Africa. It was excavated from 1859 to 1869 and connected the Mediterranean Sea and the Red Sea, greatly shortening the voyage from Europe and North America to the Indian Ocean coast.

Panama Canal: An artificial waterway connecting the Pacific and Atlantic Ocean. It is located in the Isthmus of Panama in the center of the Republic of Panama at the dividing line between North and South America. It is 82 kilometers long and can pass 60,000-ton ships.

summary

1. Earth? water polo?

1. The area ratio of sea to land

2. Distribution characteristics of land and sea

2. Seven Continents and Four Oceans

1. Related concepts: continent, island, peninsula, continent, sea, ocean, strait

2. Seven continents: Asia, Africa, North and South America, Antarctica, Europe and the Ocean

3. Four Oceans: The Great Ocean is connected to the North and India, and the four oceans are connected

Asia is the abbreviation of Asia. In ancient times, people living along the Mediterranean called the area east of the Mediterranean "Asia" and the "land of the rising sun in the East."

Europe is the abbreviation of Europa, which in the language of ancient Mediterranean people is "the land of sunset in the west".

Africa is the abbreviation of Africa. Derived from ancient Greek, it means "the sun-scorched continent".

America is the abbreviation of America, named after the Italian navigator Amerigo. It is divided into North America and South America.

Largest island: Greenland

Island: A smaller land mass.

Largest peninsula: Arabian Peninsula

Peninsula: The part of land that extends into the ocean.

Pacific Ocean: The largest area, accounting for more than half of the world's total ocean area. The surface water temperature is the highest, the water body is the deepest, and it has the most islands, accounting for more than half of the world's total island area. The Mariana Trench on the bottom of the western Pacific Ocean is 11,034 meters deep, making it the deepest place in the world.

Atlantic Ocean: The second largest ocean in the world, with an outline slightly like an "S" shape.

Indian Ocean: The third largest ocean in the world.

Arctic Ocean: The smallest and shallowest of the four oceans. The coastline is tortuous, with many islands. The ocean is covered with ice all year round, so it is called the "ice ocean".

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