OUR EARTH IN THE UNIVERSE (Unknown Facts)

DID YOU KNOW THAT...?

• The earth's crust is up to 60 km thick below the continents,whereas it is just 5-10 km below the ocean.
• The plate boundaries do not follow the coastline ,but instead go midway through oceans and continents.
  
• Dinosaurs were wiped out by volcanoes that erupted in INDIA about 60 millions years ago.
• There are volcanoes in other planet too.The Olympus Mons on Mars is the highest volcano in our solar system,with a height of 26.4 km.
• About 10000 earthquakes occur every year,of which only a few cause damages.
• In Dec 2004 ,around 230,000 people died in a devastating tsunami.
• Most of the tsunamies do not cause any damage,as they occur in the sparsely populated Pacific area.
• The deepest point in all the oceans,the Mariana Trench in the Pacific ,is just 11 km deep.
• The planet of the solar system were named after the Roman gods.However their satellites were named after the greek gods.
• Venus rotates in a direction opposite to that of the earth,An observer on Vanus would watch sunshine in the west sunset in the east.
• The sailor James Cook observed the transit of Venus in 1769 from the Pacific island of Tahiti.
  
• Once every 15 years the rings of Saturn seem to disappear.This is because Saturn and the Earth position in such a way that edges of the rings are directly in line with sunlight.The ring shine only when they reflect sunlight.
• Many volcanoes are active on the Jupiter moon lo,which emit yellow and red glowing lava rich sulphur.