State of Research on the Snowball Earth Hypothesis Essay.
Snowball Earth or Icehouse Earth refers to times when the Earth's surface was nearly or entirely frozen. The occurrence of Snowball (or Slushball) Earths is still controversial, but it is now probable that widespread glaciation occurred in periods of the Proterozoic.What is still debatable is how widespread those glaciations were.
Earth is the planet we live on. It is the third planet from the Sun.It is the only planet known to have life on it. The Earth formed around 4.5 billion years ago. It is one of four rocky planets on the inside of the Solar System.The other three are Mercury, Venus, and Mars. The large mass of the Sun makes Earth move around it, just as the mass of Earth makes the moon move around it.
FreeBookSummary.com. Snowball earth is when the Earth was covered by ice and snow from pole to pole for long periods of time in the past. The average temperature on the surface was about -SO and at the equator it was about -20', which is roughly the temperature of Antarctica today. This is because the solar radiation from the Sun is reflected back into space due to the icy surface of the Earth.
The Snowball Earth Hypothesis bases its theory on an invalid model of earth at that time. Ancient earth of the Proterozoic 750 million years ago existed in a separate dimension then what the model is based upon. There wasn't much of an ocean completely beneath a glacial sheet of ice a kilometer thick.
This essay focuses on data collected for the Neoproterozoic in Britain (particularly Scotland) and how reliable the evidence is for the hypothesis snowball earth. Introduction When looking back through the geological record, there are substantial changes to the paleoenvironment throughout the Proterozoic.
Snowball Earth could have been self-sustaining, for at least a time, because the white, ice-covered surface of the planet would have reflected sunlight back into space, keeping the planet cool.
Essay About 700-800 million years ago, the earth entered into an extremely severe ice age. The earth was covered from the North Pole to the South Pole with a thick layer of ice. This period of time is referred to as snowball earth. However after a relatively short period of time in earth's history, the ice and glaciers receded and temperatures.