Wednesday, May 20, 2009

activity 4


What is the atmosphe? the layer of air that surrouds earth.

What is it made of? earth's is made of air.


What are the different layers of the atmosphere?Exosphere(300km to more than 600 km)





  • Many satellites orbit here.

  • Air pressure is lowest here.

Temperature goes up as altitude increases.


Thermosphere(90 km to 300 km)



  • Shimmering curtains of light called auroras happen here.

  • Air pressure is lower than mesosphere

  • Temperature goes up altitude increases.

Mesosphere(50 km to 90km )



  • Meteors, or "shooting stars" burn up here

  • Air pressure is lower than stratosphere

  • Temperature goes down as altitude increases.This is the coldest layer of the atmosphere

Stratosphere(16km to 50km)




  • Jets cruise near the bottom of this layer

  • Air pressure is lower than troposphere

  • Temperature goes up as altitude increases

Troposphere (0km to 16km)




  • All weather happens here

  • Air pressure is highest in this layer

  • Temperature goes down as altitude increasesthe

Why is it important for us to take care of our precious atmosphere?


the atmosphere is important for two main reason.it is the air that you breathe so,no

Friday, May 1, 2009

actividad 3

What is water cycle? water moves around earth in a constant cycle. in the atmosphere,

clouds are made of tiny drops of water of pieces of ice.precipitation from clouds

falls on the land and into river,lakes and ocean

can you make your onw diagram of the water cycle





what is so intersting about the water cycle?