Rabu, 20 Juli 2011

Atmosphere

The Atmosphere is a layer of gases surrounding a planet, the planet's surface until far in outer space. On earth, the atmosphere there from a height of 0 km above ground level, up to about 560 km from the earth's surface.


The atmosphere is composed of several layers, named after the phenomenon that occurs in the layer. Transitions between layers with each other takes place gradually.

Rabu, 13 Juli 2011

Forest

Forest is an area that has a lot of dense vegetation that contains, among other things: trees, shrubs, ferns, grasses, fungi and so forth. We have a vast forest areas and diverse species with a fairly high level of damage caused by forest fires, illegal logging, and so forth.

Forests are life forms that spread across the world. We can find a forest in the tropics and cold climates, in the lowlands and in mountains, on small islands or in the large continent.

Sabtu, 09 Juli 2011

Solar System

The Solar System is made up of all the planets that orbit our Sun. In addition to planets, the Solar System also consists of moons, comets, asteroids, minor planets, and dust and gas.

Everything in the Solar System orbits or revolves around the Sun. The Sun contains around 98% of all the material in the Solar System. The larger an object is, the more gravity it has. Because the Sun is so large, its powerful gravity attracts all the other objects in the Solar System towards it.