The Infinite Frontier: Planet Earth (Moving plates (The continents that we…
The Infinite Frontier: Planet Earth
Air and water
The earth has ocean water and atmosphere,
The amount of ocean water covering the earth is 75%,
One of the theory of how the atmosphere formed, is that gases releasing from inside the earth through volcanoes.
Because the earth has a great position related to the distance from the sun it can hold water is not to cold or hot
To have water the temperature need to be from 0 100 centigrade.
Planet Earth and other planets, form by the collision of smaller bodies, this bodies were orbiting the sun and colliding with each other, as they got bigger they were heated by the impact of the bodies.
This period of heated lasted 100 million years, a lot of energy was released
Earth has a inner core, outer core made of liquid iron, and a mantle of rock,
The crust sits on top of the mantle
Earth has a magnetic field, because it core has liquid metal and it moves
Seismology is the best method to study the structure of the earth, earthquakes can be very destructive but they offer a lot of information about earth.
The continents that we currently live in used to be only one continent, Pangea.
Pangea lasted for around 200 millions years
Sea floor spreading is described as new ocean floor is being generated at mid ocean ridges, this mid ocean ridges themselves are what's pushing the continents apart
Continental pressure- caused by earth pressure causes volcanoes,
The crust of the seafloor and the mantle under the crust is not stationary, it constantly movings.
In the early stages of earth, the ocean water were more acidic, the atmosphere co2 hydrogen chloride,
The greenhouse effect help earth maintain is current temperature by reflecting the light from the sun.
Life could not evolve on the land, but on the ocean organism could use photosynthesis to survive.
The organism would exhaust oxygen that helped reduce the amount of co2 and the rays of the sun.