UNIT 2 - TAP WATER Vs BOTTLED WATER

Supporting bottled water:

5 razones de peso para beber agua mineral

Supporting tap water: (

Video: La historia del agua embotellada (in spanish)

WHAT IS YOUR OPINION???

UNIT 2 - STRUCTURE OF THE ATMOSPHERE


Hello atmospheric scientist!

Check this video about atmosphere structure (in english):

Or this one (in spanish):

What is the lowest atmosphere layer? and the highest atmosphere layer?

SOLUTION GAME OF THE MONTH:

Find out the animal, looking to its eyes:

HORSE'S EYE

SNAIL'S EYE

GUINEAN PIG'S EYE

CROCODILE'S EYE

RABBIT'S EYE

SIAMESE CAT'S EYE

IGUANA'S EYE

FISH'S EYE

DID YOU ENJOY THE GAME?

LEAVE A COMMENT TO START ANOTHER GAME OF THE MONTH!

UNIT 1 - GLOSSARY - KEY WORDS

The following words are important for this unit. Learn them:

• Universe
• Heliocentric and geocentric model
• Big Bang theory
• Telescope, probe and robots
• Galaxy
• Milky Way
• Star
• Color, size, bright
• Sun
• Planet
• Dwarf planet
• Comet
• Satellite
• Asteroid
• Meteorite
• Solar System
• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
• Inner and outer planets
• Rocky, liquid and gaseous
• Asteroid's belt
• Light year
• Moon
• Full moon, new moon, first quarter, third quarter

GOOD LUCK FOR THE EXAM (Thursday 31 october).

IF YOU HAVE QUESTIONS, WRITE COMMENTS PLEASE!

UNIT 1 - PLANETS AND OTHER BODIES

Hello astronauts! 

Planet Kepler 10-b, discovered by NASA's Kepler mission

What is a PLANET? They are bodies that: 

- are spherical or almost spherical

- turn around a star

- can atract other bodies

Other bodies:

- DWARF PLANETS: They are spherical but they are smaller and they do not attract other bodies.

Dwarf planets, and their sizes compared with planet Earth

- SATELLITES: They are bodies that turn around planets. For example: moon, titan...

In the following picture you can find different "moons" in the solar system, look how big are Jupiter's satellites:

Different satellites in the Solar System

- COMETS: They are icy small bodies that travel showing a tail.

In the following video, you can find information about Halley's Comet, the most famous periodic comet:

- ASTEROIDS: They are rocky bodies with a variable size; from few metres to several kilometres.

When asteroids enter into atmosphere, they are called METEORITES. 

Look this amazing video about a meteor in Russia, which was seen on February, 15th 2013 in Russia. 1500 people injured by the expansive wave.

http://es.wikipedia.org/wiki/Bólido_de_Cheliábinsk

Are you afraid of meteorites? :O

Unit 1 - The Universe - Stars

STARS

Remember, STARS are spheres with its own light and energy.

The energy is produced by NUCLEAR FUSION: At very high temperature, hydrogen joins to hydrogen and the reaction produces energy (lignt and heat) and Hellium:

There are different type of stars:

- with different Color, according to its temperature:

- with different Size, (Dwarfs, Medium, Giants and Supergiants)

Check the stars size comparison in this video:

- with different Bright, according to the distance, the size and the temperature.

LIFE OF THE STARS:

Our star, THE SUN:

This extraordinary video looks back on the 3rd year of operation of NASA's Solar Dynamics Observatory. Since its launch in 2010, SDO's data and imagery have exceeded everyone's hopes and expectations, providing stunningly detailed views of the sun. The observatory has continued to return breathtaking pictures and movies of eruptive events on the sun. These images are more than just pretty. By highlighting different wavelengths of light, scientists can track how material on the sun moves. Such movement, in turn, holds clues as to what causes these giant explosions.

SDO is the first mission in a NASA's Living With a Star program, the goal of which is to develop the scientific understanding necessary to address those aspects of the sun-Earth system that directly affect our lives and society.

Do you know that each constellation of zodiac has different stars? For example, in Capricorn the main star is called ALGEDI.

Which is your zodiacal sign and what is your main star?

Unit 1 - The Universe - The galaxies and our galaxy: the Milky Way

Hello space explorers!

 Galaxies are systems composed by stars, gases and dust. Examples of galaxies range from dwarfs gallaxies, with as few as ten million stars (10^7) to giants galaxies, with a hundred trillion stars (10^14).

NGC 4414, a typical spiral galaxy

They are normally spiral, eliptical or irregular. The only difference between the three is what shape they are. 

The Local Group
There are billions of galaxies in our Universe. Most of these are clumped together in small groups. Our own galaxy which is called The Milky Way Galaxy lies within a group of galaxies that we call The Local Group.

The Local Group consists of about 30 galaxies. The three largest are The Andromeda Galaxy, The Milky Way Galaxy, and Triangulum.

THE MILKY WAY: 

Our galaxy, the Milky Way:

- Diameter: 100 000 light years 

- Thickness: 1 light-yea

- Number of stars: 400 billion.

CHECK THIS AMAZING VIDEO!

Time-lapse captured in Dakota (USA). Ten seconds of the video is about 2 hours 20 minutes in real time. 

One question: if Milky Way is spiral, why do we see it lineal?