LIFE ON OTHER PLANETS: TITAN

How is Titan similar to Earth:?

View on one of the Lake on Titan



On this satellite image taken by NASA Gassani, we can see how Titan is similar to
some landscapes on Earth and its rivers

Titan is similar  to the earth by having rain, lakes and rivers. The lakes are not made of water ut by methane. The reason Methan is the liquid found in the lakes is because the temperature on Titan is -180ª so the methane condenses in to liquid Methan. Some scientits say even there maybe some kind of life on Titan.

This is a nice video about Titan.

http://goo.gl/KK7a7

Can you explain why this is good news if there is some other lifeforms?

I think this is an interesting discovery because maybe we could discover some kind of life and maybe use them as new food, or to do clothing.  we could take some of it back to earth. We could also find new materials and new energies. If we find life on Titan it could help us to understand how earth got life.

What did you learn today that you can share on your blog?

Today I learned from the video that Saturn moon, Titan, has lakes of methane liquid.

Also  I learned  that if you go to the desert in Lybia it is just like if you are on the surface of Planet Mars. 

I learned that in 2008 the athmosphere of earth slowed down a melted meteorite because of the friction.

Mercury does not have any athmosphere so lots of craters have been formed because there was nothing to slow down of melt the meteorits.

Solar System







Sources for pictures: NASA.org

Science Questions

1. What Causes to have seasons:

We have seasons because the earth has a tilt of 23.5 degres and earth turns around the sun. When it is winter in America it is summer in Australia because at this time the Northern emisphere is a little closer to the sun and gets more energy from the sun. Look at the diagramm above and at the fantastic video below.
http://goo.gl/v3Szf


2. How often does the earth go around the sun?

The earth makes a full round around the sun in a year. A year is 365 days.
http://goo.gl/3e0fB


3. How long does it take for the earth to rotate on its axis:

The time it takes the earth to rotate on its axis is about 24 hours or 1 day.

 http://goo.gl/eL67E


4. Can you explain a solar eclipse?
The moon goes around the earth. The earth goes around the sun. When the moon is in perfect alignment and in between earth and sun, it creates a solar eclipse.
http://goo.gl/HzjFe
 


This diagram is from one of my  french books I received from one of my aunt after a lunar eclipse I saw in summer 2009 at her house in Bordeaux: Eclipses.

Sun eclipse in Paris: July 1999



5. Why do we have daytime and nightime?

We have night and day because the earth rotates every 24 hours. When one half of our planet is facing the sun the other half in the dark
http://goo.gl/Inmx7

6. How often does the moon orbit the earth?

The moon orbits the earth every 29 days.
 http://goo.gl/Inmx7

7. Draw a picture that shows Earth, Sun and Moon. Label and add important information.





SUN, MOON AND EARTH
The rotation of the earth explains the day and night change
The inclination of the earth and its revolution around the sun explain the seasons



This was a link that has nearly all the answers and great explanations and even a test. http://goo.gl/ZbhZk

 The books used were:

• Eclipses: Les rendez-vous célestes, Editions Bordas, Serge Brunier and Jean-Pierre Luminet
• La Meteo, Editions Fleurus
• El gran libro de los porques Edicion, San Pablo
• Descubramos el universo, Edición Elfos