Energy & Changes of State

The states of matter are the forms that matter can take at any given point of time, such as a:

Solid: a solid is a state of matter that is tightly packed and vibrating in place. Solids do not take the shape of their containers. Matter can only be broken from this state through heat that breaks the bonds called melting, the change from solid to a liquid, or a more advanced stage called sublimation, the change from a solid directly to a gas. A solids bonds are shaped like a box with the bonds forming rows inside.

Liquid: a liquid is a state of matter in which the molecules are loosely packed and slide past one another while vibrating. Liquids also take the shape of their containers. This form of matter can be broken by either heat, called vaporisation, or cold, called freezing.

Gas: a gas is a state of matter in which the molecules are very widely spaced (for molecules) and move past eachother at high speeds bouncing off the walls of their containers. Gas can change to a liquid through the process of condencing and going directly to a solid called deposition.

All of this is described in this video:

Nov. 8th, 2011 Asteroid Flyby

Yesterday, on November 8th 2011, an asteroid 400 m across flew by the Earth at an altitude of 201,700 miles. The tracking of the estimated aircraft carrier sized asteroid was done by the use of a 70 meter Deep Space Network Antenna. many other Deep Space Objects have passed close to earth, but the closest was an asteroid that passed at an altitude of 5480 kilometers though it was only a meter wide. The next estimated object to pass us is in April 13 2029 called Apophis the name of the serpent of death in Egyptian whitch will pass within 5 earth diameters of us. this is a computer generated video of what would happen if an asteroud 500 km in diameter would hit us:

I would like to put out that this video asteroid is 1000x bigger than the topic asteroid, I just would like to point out how lucky we are that this is a very low chance to happen.

I just put up this video because I thought it was cool. :)