Friday, August 23, 2013

We sometimes call valuable metals, such as platinum and gold, precious metals. Platinum is the most valuable metal in the world. It is call...
August 23, 2013
How are Metals Formed? Everything on earth is made up of a combination of building blocks called the chemical elements.  There are 93 di...
August 23, 2013
August 23, 2013

Thursday, August 22, 2013

What is a climate? The weather where you live may be sunny one day and cloudy the next, or dry during one season and wet during another...
August 22, 2013
August 22, 2013
What is your weather like today? Is it sunny, cold, wet or dry? What causes these different kinds of weather? Heat and light from the sun t...
August 22, 2013
How do Rocks Change? Have you ever seen waves pounding against the coastline? The force of the water moves the sand and pebbles on the...
August 22, 2013
August 22, 2013
August 22, 2013
August 22, 2013
On our planet, there are about 530 active volcanoes, which might erupt at any time. Some of them lie under the sea. Each year, only about...
August 22, 2013

Wednesday, August 21, 2013

Would you be frightened if the ground started shaking under your feet? Sudden, violent movements under the earth's surface are called...
August 21, 2013
August 21, 2013
August 21, 2013
August 21, 2013
August 21, 2013

Friday, August 16, 2013

August 16, 2013
Look out of your window. Is the air moving? It is probably moving enough to make the branches on the trees sway slightly. The weight of...
August 16, 2013
August 16, 2013

Thursday, August 15, 2013

August 15, 2013
August 15, 2013
August 15, 2013

Wednesday, August 14, 2013

August 14, 2013
August 14, 2013
The world is changing around us all the time. There are physical changes as matter changes from solid to liquid to gas. When water ev...
August 14, 2013
August 14, 2013
Have a look around you. How many things can you see made from plastics? In the modern world, different kinds of plastics are everywhere...
August 14, 2013
August 14, 2013
August 14, 2013
August 14, 2013
August 14, 2013
Knives, forks, ships, trucks, and even bridges can be made from different types of steel. Steel is very strong and is one of the most use...
August 14, 2013