Warm Up Vocab Review A definition will appear on the screen Find the correct term on your flashcards and write it on your warm up sheet 1.The gently sloping section of the continental margin located between the shoreline and the continental slope 2.Major region of ocean floor made of oceanic crust (deep end of pool) 3.A long, undersea mountain chain that forms along the floor of the major oceans 4.Major region of ocean floor made of continental crust (shallow end of pool) Answers 1.Continental Shelf 2.Deep Ocean Basin 3.Midocean Ridge 4.Continental Margin Earths Oceans Earth is very different from other planets in our solar system Main reason is WATER Earths Oceans The amount of water on Earth gives it the nickname: Blue Planet 71% of the Earths surface is covered with water More than 95 percent of the underwater world remains unexplored This image represents the total volume of water on Earth (blue sphere) compared to the volume of Earth. Where is most of the Earths water found? Global Ocean 5 main oceans Which hemisphere (North or South) is mostly made up of oceans? Divisions of the Global Ocean Pacific Ocean - the largest and has the greatest depth Divisions of the Global Ocean Atlantic about half the size of the Pacific and not quite as deep Divisions of the Global Ocean Indian slightly smaller than the Atlantic, largely a Southern Hemisphere body Divisions of the Global Ocean Arctic about 7 percent the size of the Pacific, partly covered by ice Divisions of the Global Ocean Southern newest named ocean (2000), Also known as: Great Southern Ocean, Antarctic Ocean and South Polar Ocean surrounds Antarctica up to 60 S latitude How did the Oceans Form? 4.5 billion years ago there were no oceans Volcanic gases began to form Earths atmosphere How did the Oceans Form? About 4 billion years ago the Earth cooled enough for water vapor to condense The water began to fall as rain The rain filled the deeper levels of the Earths surface and the first oceans began to form How did the Oceans Form? The remaining half is believed to have come from comets containing ice colliding with Earth Since the plates are moving, the oceans have changed location/size throughout history. 65 million years ago, the South Atlantic Ocean was much smaller than it is today. Will the oceans stay as they are now in the future? Why or why not? Graphing the Volume of the Oceans Use the data below to make a bar graph of the volume of the oceans. Assign a different color to each ocean (color each bar and ocean name). Pacific Ocean = 660 million km 3 Atlantic Ocean = 310 million km 3 Indian Ocean = 264 million km 3 Southern Ocean = 72 million km 3 Arctic Ocean = 19 million km 3 Dont forget to include: Title Labels for each axis Glue on page 44 of ISN World Ocean Volumes Geography Practice Can you identify and label the 5 oceans? Ocean Floor Features Glue on page 46 of ISN Label each feature as we review on board Tweet about it! What is something new you learned or a question you have from todays class? Make sure you include a hashtag!