"The Sun" PPT courseware 16

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"The Sun" PPT courseware 16

Get to know the sun

The sun, this formidable and revered planet, is made of what material, and what is its interior like?

Read the small information on page 31 of the textbook to learn about the sun.

About the sun

The sun is the central object of the solar system, it is a star.

The sun is about 150 million kilometers from the earth. It takes 3,500 years for a person to walk, 20 years to fly, and more than 8 minutes to fly at the speed of light.

The volume of the sun is 1.3 million times that of the earth, and its diameter is 109 times that of the earth.

The sun is about 5 billion years old, and it can shine for another 5 billion years.

Basic conditions of the sun

Diameter: 1,392,000 kilometers

Volume: 14.1 billion cubic kilometers

Distance from Earth: 150 million kilometers

Surface temperature: 5500 degrees

Core temperature: 15 million degrees

Rotation period: 27 days

Age: 5 billion years

Other characteristics of the sun

The sun's huge energy comes from nuclear fusion.

The activity cycle of sunspots is approximately 11 years.

The Earth receives only one 2.2 billionth of the total energy emitted by the Sun.

The life of the sun is 10 billion years.

The future of the sun

In 5 billion years, the sun will run out of hydrogen fuel and be replaced by helium. As the internal pressure of the sun increases at this time, the interior will be pushed outward. At this time, the sun expands rapidly and becomes a "red giant". Starting from Mercury, the sun will engulf Mercury, Venus, Earth, and Mars one by one. But as the volume increases and there are vacancies inside, the sun's gravity will decrease. Maybe the earth can escape the fiery apocalypse, but even so, the surface of the earth is already a mess. Eventually the sun shrank into a white dwarf the size of the Earth. This is the future of the sun and our future.

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Update Time: 2024-09-27

This template belongs to science courseware E-education edition sixth grade science volume 2 industry PPT template

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