Ch. 13 Oceans Notes. Oceans 71-75% of Earth’s surface is covered by water. 4 main oceans were formed within the last 300 million years. –Artic Ocean –Indian.
Features of the Ocean Floor. Exploration Time Line 1915 Scientists aboard the German ship named Meteor used sonar to map the ocean floor. They used a.
September 29, 2008
The Deep Chapters 3, 18, 19. World Ocean Primitive earth and formation of the ocean –early earth thought to be composed of silicon compounds, iron, magnesium.
