Earth as a cosmic matter. The Solar System Desk or round shape? Elliptical orbits? The Sun-Centre of the Universe? Heliocentric system Gravitation Mikulas.

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Presentation transcript:

Earth as a cosmic matter

The Solar System

Desk or round shape? Elliptical orbits? The Sun-Centre of the Universe? Heliocentric system Gravitation Mikulas Kopernik Johannes Kepler Issac Newton

Different Climatic Zones

About 4.75 billion years ago…

…out of solar nebula

Weight: 80 times smaller Distance:60 times Earth’s radius

Important sunlight

Ocean tides

Earth’s rotation around the Sun The Sun The orbital speed: 30km/sec The length: 940mil.km The time: 365days 5hours 48min 45.7sec = 1sidereal year

Earth’s rotation around its axis Time of rotation: 23 hours 56 minutes seconds = 1 sidereal/astral day

The cause of the seasons is that the rotation axis is not perpendicular to its orbital plane, but makes an angle about degrees.

Diagram of the Earth's seasons as seen from the north. Far right: December solstice

Diagram of the Earth's seasons as seen from the south. Far left: June solstice

Time zones

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