Some Facts about Continental Drift

• Earth's crust is not a single continuous layer{yeah really}
• It is made up of a number of gigantic pieces like a huge jigsaw puzzle{really huge}
• Each piece is called a crustal plate{geographic students know very well}
• Currents of molten rock rise up through the mantle like boiling water in saucepan{don't worry if you didn't understand ,you may not have to give test on it}
• These form convection cells that drive the movement of the plates so they move continuously moving away or towards each other.{this is continental drift}
   

Some Facts You May Not Know About Sun

• The sun is a giant ball of hot gas{Its too hot}
• Its about 150 million kilometers from earth {don't plan for picnic}
• Surface of sun is about 5500°C{not a big deal in front of it core temperature}
• The core is about 15.6 million°C{unimaginable}
• Sun is so large that one million earth can fit inside it{If you wont believe you can try}
• It consumes four million tonnes of hydrogen every second{hardcore engine}
• Still it have enough fuel that it can run for next five billion years{no use of life insurance}

Global Positioning System aka GPS

The GPS is a network of 24 navigation satellites orbiting the Earth that people can use to pinpoint their position. THe satellites orbit at a height of 20,000 kilometres(12,500 miles). A GPS receiver picks up signals from any of these satellites that are above the horizon. It uses information in each signal to work out how far away it is from the satellite. It can calculate its position from the