DO YOU KNOW THE UNIVERSE?

INTRODUCTORY SCHEME 

1. THE UNIVERSE 

The universe is everything. Matter, energy, space and time, everything that exists is part of Universe. Is so big, but it isn’t infinite. If it was, would be infinite matter into infinite stars and not.

Matter  is not distributed uniformly, but is concentrated in places concrete: galaxies, stars,planets…

But first we are going to pose a question…

HOW THE UNIVERSE WAS FORMED?  

Many astronomers think that the universe was formed with the called Big Bang, a giant explosion that happened between 10 and 20 billion years ago.

This giant explosion threw matter in all directions and caused space itself. It expanded itself and since then, the universe is losing density and temperature.

When the universe cooled, the material combined to form galaxies, stars and planets.

2. THE GALAXIES AND THE MILKY WAY 

Stars are grouped into galaxies. There are billions of galaxies in the Universe. A galaxy it’ s a huge accumulations of stars, gases and dust .

The Sun and the Earth are in a galaxy called the Milky Way . This galaxy has a spiral shape.

Our Solar System is located near the edge of the Milky Way’s spiral.

3. STARS 

The stars are masses of gases, mainly hydrogen and helium, which emit light. They find at very high temperatures. Inside there are nuclear reactions.

The Sun is the closest star to our planet, the Earth.

4. THE SOLAR SYSTEM       

                                                 SCHEME

The Sun how we have said before is the closest star to our planet. It is a gigantic gas mass. Its Surface is about six thousand degrees of temperature, so it releases a lot of energy .This energy reaches the earth in the form of light and heat making life possible on the planet.

IMPORTANT:  “ The Sun is the star of the Solar System. They provides us light and hot”

-          
  
   THE PLANETS AND SATELLITES 

The planets of the solar system are stars that don’t have their own light and that they turn on themselves.

There are two types of planets:

1.         Inner Planets : They are the closest to the sun. They are characterized by having a small size and a solid surface. They are Mercury, Venus, Earth and Mars.
2.       Outer planets: They are the most distant from the Sun. They are characterized by being gaseous, of large size and be surrounded by numerous satellites. Jupiter, Saturn, Uranus and Neptune forms the set of outher planets.

• Mercury: Is the smallest of the Inner planets. It hasn’t atmosphere or satellites
• Venus:  It has a very thick atmosphere and it doesn’t have satellites. It is the largest of the inner planets.
• Earth:  It is the largest of the inner planets. It has an atmosphere with oxygen and water on the surface. It has a satellite, the Moon.
• Mars: Its atmosphere has no oxygen
• Jupiter: It’s the biggest
• Saturn:  It has a ring system, and one of its satellites is almost as big as the moon.
• Uranus:  It is four times larger than Earth and has 15 satellites
• Neptune: Its size is similar to that of Uranus             

        OTHER STARS OF THE SOLAR SYTEM

Asteroids: They are large rocks that revolve around the Sun

Meteorites: They are asteroids that come into contact with Earth and collide with their surface

And now…. A Funny Song !! ( Maybe with this video you learn to pronunciate better the planets and know more about them)

                                            

FUNNY EXERCISE

1.     If you had to choose, what planet would you be? Why? And, What characterizes defined you?     


If you didn't understand something, there you have a summary presentation: