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Planet Earth (the beginning (the earth was created 4.5 billion years ago…
Planet Earth
the beginning
the earth was created 4.5 billion years ago and it was all molten rock
made by small collisions of other things from space
at one point the earth was covered with water that was acidic
earth has oceans and atmospheres
the range of temperature on earth is narrow
under the surface
the earths new crust is spread from the ocean ridge
erosion and plate tectonics regenerate earths crust
volcanic eruptions bring up water vapor(thermal energy) that create hot spots
motion inside earth changes earth's surface dynaic motion
the make up of the earth
It has a liquid iron core
the metal in the center creates a magnetic field
dynamo process - costing magnetic field when liquid metal circulates
it has a rock mantle crust
if you measure the speed of the waves of motions that are produced by earthquakes, you can tell what is inside earth
unique things about us
surface motion is less on other planets than earth
earth is the only planet efficient in renewal of materials