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THE SOLAR SYSTEM AND THE EARTH. 1) The Universe  All the matter and space that exists.  It includes celestial bodies like:

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Presentation on theme: "THE SOLAR SYSTEM AND THE EARTH. 1) The Universe  All the matter and space that exists.  It includes celestial bodies like:"— Presentation transcript:

1 THE SOLAR SYSTEM AND THE EARTH

2

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4 1) The Universe  All the matter and space that exists.  It includes celestial bodies like:

5 Galaxy:

6 Stars:

7 Planets:

8 Satellites:

9 Asteroids:

10 Comets:

11 Meteorites:

12 Galaxy  An enormous cloud of stars and other celestial bodies

13 Galaxy An enormou s cloud of stars and other celestial bodies  Has 4 shapes: 1. Spherical 2. Elliptical 3. Spiral 4. Irregular Our Galaxy is the Milky Way. It has a spiral shape.

14 Stars - A celestial body with a spherical shape - Made of gases 1. Color Example: The sun is a yellow-orange star. 2. Size Example: large star = giant star small star = dwarf star *The sun is a dwarf star!

15 Sun Moves in two ways: 1. Rotation 2. Revolution

16 large spherical bodies that revolve around a star Planets

17 smaller celestial bodies that revolve around planets the Earth has only one natural satellite: the moon smaller celestial bodies that revolve around planets the Earth has only one natural satellite: the moon Natural Satellites:

18 bodies of rock smaller than planets bodies of rock smaller than planets Asteroids

19 bodies of rock and ice Comets

20 Also called shooting star Small pieces of rock from asteroids and comets that travel through space Also called shooting star Small pieces of rock from asteroids and comets that travel through space Meteorites

21  part of the Milky Way (Via Lactea) Galaxy.  includes the Sun and all the celestial bodies that revolve around it, such as:  part of the Milky Way (Via Lactea) Galaxy.  includes the Sun and all the celestial bodies that revolve around it, such as: 2) Our solar system Planets Natural satellites Asteroids Comets Meteorites

22  Inner planets: Mercury The Earth Venus Mars Outer planets: Jupiter Saturn Uranus Neptune  Inner planets: Mercury The Earth Venus Mars Outer planets: Jupiter Saturn Uranus Neptune Planets

23 3) How does the Earth move?  Rotation:  The Earth rotates on an imaginary axis.  It takes 24 hours.

24 3) How does the Earth move?  Revolution:  The Earth revolves around the Sun in an elliptical orbit.  It takes one year (365 days, 6 hours and 9 minutes).


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