Amemar.. . . . . . . . . . . . . . & kid's: September 2011

Thursday, September 29, 2011

Monday, September 26, 2011

Friday, September 23, 2011

Friday, September 16, 2011

GLOBAL WARMING

Greenhouse Effect, climate, and pollution

The Greenhouse Effect is the phenomena where gases in our atmosphere trap heat from the Sun and keep the Earth warm. When operating naturally, the Greenhouse Effect keeps Earth's climate relatively stable.

Climate is an average measurement of weather over a period of time. We know Earth's climate has changed slowly over the millions of years of recorded history. However, measurements from the last 100 years show that Earth's temperature has gone up by 1 degree Fahrenheit.

Pollution is the biggest factor affecting Global Warming. When too many greenhouse gases get added to the atmosphere, the "blanket" around the earth gets denser. More heat gets trapped in the atmosphere and the Earth's temperature gets higher.
Some people call it 'climate change' and say we don't need to worry about it. But the fact is, any amount of greenhouse gases we add to the atmosphere is bad. We should all strive to keep our pollution as low as possible.

Our Solar System

The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. Of the many objects that orbit the Sun, most of the mass is contained within eight relatively solitary planets whose orbits are almost circular and lie within a nearly flat disc called the ecliptic plane. The four smaller inner planets, Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of rock and metal. The four outer planets, the gas giants, are substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are composed largely of ices, such as water, ammonia and methane, and are often referred to separately as "ice giants".