Oceans...

1. A Seminar on Oceans... Courtesy - http://www.applebuz.com

2. CONTENTS : • Introduction… • Physical properties… • Life in oceans… • Types of oceans… • Advantages of oceans… • Conclusion ….. Courtesy - http://www.applebuz.com

3. INTRODUCTION : An ocean is defined as a body of salt water  that composes a large part of  earth… Approximately 71% of the planet's surface is covered by saline water that is customarily divided into several principal oceans and smaller seas….. Courtesy - http://www.applebuz.com

4. PHYSICAL PROPERTIES : • Area is 361 million square kilometers… • Volume is approximately 1.3 billion cubic kilometers… • The bluish color of the ocean is a composite of several contributing agents… • Ocean often emits a visible glow, or luminescence, which extends for miles at night…. Courtesy - http://www.applebuz.com

5. LIFE IN OCEAN : • The ocean has a significant effect on the biosphere… • ocean temperatures determine climate and wind patterns that affect life on land… • Life within the ocean evolved 3 billion years prior to life on land… Courtesy - http://www.applebuz.com

6. TYPES OF OCEANS : • Majorly oceans are classified into 5 types they are • Pacific ocean… • Atlantic ocean… • Indian ocean… • Arctic ocean… • Southern ocean….. Courtesy - http://www.applebuz.com

7. PACIFIC OCEAN : • largest of the earths oceanicdivisions.. •  extends from the Arctic  in the north to the Southern ocean in the south… • bounded by Asia and Australia  in the west, and the Americas  in the east… • 165.2 million square kilometers… • covers about 46% of the Earth's water surface and about one-third of its total surface area… Courtesy - http://www.applebuz.com

8. ATLANTIC OCEAN : • Second-largest of the world's oceanic  divisions… • Area  of about 106,400,000 square kilometers… • Covers approximately 20% of the Earth’s surface and about 26% of its water surface area… •   Extending longitudinally between Europe  and Africa  to the east, and the Americas  to the west….. Courtesy - http://www.applebuz.com

9. INDIAN OCEAN : • the third largest of the world's oceanic  divisions… • covering approximately 20% of the water  on the earth’s surface… • bounded on the north by the Indian subcontinent  and  Arabian peninsula; on the west by eastern Africa…   • on the east by Indonesia and Australia and on the south by the southern ocean….. Courtesy - http://www.applebuz.com

10. ARCTIC OCEAN : • Located in the northern hemisphere  and mostly in the arctic north polar region… • The smallest and shallowest of the world's five major oceanic divisions… • Arctic Ocean is partly covered by sea ice throughout the year… • Its salinity is the lowest on average of the five major oceans….. Courtesy - http://www.applebuz.com

11. SOUTHERN OCEAN : • Also known as the the Antarctic Ocean… • Comprises the southernmost waters of the world ocean… • Regarded as the fourth-largest of the five principal oceanic divisions… Courtesy - http://www.applebuz.com

12. ADVANTAGES : • Ocean Nourishment… • Offshore aquaculture… • solar radiation management … • Carbon sink… • Marine day….. Courtesy - http://www.applebuz.com

13. Thank you….. Courtesy - http://www.applebuz.com