origin of the earth
Post on 24-Feb-2016
32 Views
Preview:
DESCRIPTION
TRANSCRIPT
Graham Loveland
Origin of the Earth
After the big bang there was an immense amount of super heated gas left over. Over time gravity condensed this gas and after billions of years stars started to form.
The beginning
Once the sun formed there was still a massive amount of gas and dust orbing it. From this the dust condensed to form planets.
How Earth formed
When the Earth was formed it was created by billions of asteroids colliding with the Earth. The asteroids had a large amount of iron and nickel in them which is the composition of the core. This iron and nickel core is the reason we have a magnetic field.
Earth’s core
Scientists believe water was formed by volcanic outgassing, the removal of gases by heat or pressure, and crystalized water on meteorites.
How water formed
K.S.What is the most common scientific theory for the beginning of the universe?
top related