"Understanding Our Earth" Blue Earth PPT Courseware 2

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"Understanding Our Earth" Blue Earth PPT Courseware 2

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"Understanding Our Earth" Blue Earth PPT Courseware 2

1 How big is the earth

The earth is an approximately elliptical sphere.

It is the fifth largest planet in the solar system.

The equatorial radius is 6378.2 kilometers.

The surface area is about 510 million square kilometers.

2. The age of the earth

The age of the Earth is usually referred to as its astronomical age.

The current best estimate of Earth's age is 4.55 billion years.

3. The hottest place on earth

The hottest place on earth is in the core, about 6000°C.

The hottest places on Earth's surface occur near the equator.

In Massawa, Ethiopia, the average temperature throughout the year is 30.2°C, and it is midsummer almost every day.

The highest absolute temperatures occur in Somalia, Africa. Temperatures as high as 63°C were measured in the shade there.

4. The coldest place on earth

The coldest place on earth is located in Antarctica. Russia’s Vostov weather station in Antarctica has recorded the lowest temperature in global history: -89.2°C (so far).

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"Understanding Our Earth" Blue Earth PPT courseware:

"Understanding Our Earth" Blue Earth PPT Courseware Think about it, what information do you know about our home planet? Try to share some with everyone! 1. The position of the Earth in the universe. The total galaxy refers to what can be observed by people using existing observation means and methods.

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Update Time: 2024-11-25

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"Understanding Our Earth" Blue Earth PPT Courseware 2
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