Tuesday, July 29, 2008

learn atom, molecule and soil

tO dAy i LeArN AbOuT ATOM... actually atom is a thing that cannot be destroyed.. example hidrogen, that it has one ONLY.. H.... after that mOlEcUlE, actually molecule is a substance that has more than one substance.. example, carbon dioxide, CO2, on the other hand, during presentation, that present the history of atom that remind me to that topic, such as john dalton that was find the atom that cannot be destroyed. after that the soil that have add something new in my knowledge. the new knowledge is the 'horizon' of soil that have 5 horizon, first the o horizon, second A horizon, Third B horizon, C horizon, lastly R horizon..overall it's really good for my new information

Tuesday, July 15, 2008

The water cycle

The water cycle



  • The water cycle technically known as the hydrologic cycle and hydrologic cycle is the circulation of water within the earth's hydrosphere, involving changes in the physical state of water between liquid, solid, and gas phases. The hydrologic cycle refers to the continuous exchange of water.
  • The evaporation is the transfer of water from bodies of surface water into the atmosphere. This transfer entails a change in the physical nature of water from liquid to gaseous phases.In addition, When the ocean water are heat by sun, the water will heated and the intermolecular of the ocean water will lose their energy and release the bond and the molecule will changes their phases from water to stim (gas ) this process called evaporation.
  • 90% of atmospheric water comes from evaporation, while the remaining 10% is from transpiration.