What Is an Ocean?

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What Is an Ocean? An ocean is a very large area of salt water. Most of the Earth is covered in ocean. There are five oceans in the world: • Pacific Ocean • Atlantic Ocean • Indian Ocean • Southern Ocean • Arctic Ocean Pacific Ocean The Pacific Ocean is the biggest ocean in the world. It reaches from North and South America to Asia and Australia. Did You Know…? The word ‘Pacific’ means peaceful. Atlantic Ocean The Atlantic Ocean is the second biggest ocean in the world. It reaches from North and South America to Europe and Africa. Did You Know…? The first person to sail across the Atlantic Ocean from Europe to America was Leif Eriksson, a Viking, in the year 1000. Indian Ocean The Indian Ocean is the third biggest ocean in the world. It is named after the country of India. The Indian Ocean is home to many endangered sea creatures, including turtles, seals and dugongs (also known as sea cows). Southern Ocean The Southern Ocean is the second smallest ocean in the world. It is also known as the Antarctic Ocean as it surrounds Antarctica. It is the coldest and wildest ocean in the world. Arctic Ocean The Arctic Ocean is the smallest ocean in the world. It surrounds the Arctic. Often, the Arctic Ocean is completely covered in ice. Did You Know…? Because of climate change, the amount of ice covering the Arctic is getting smaller every year. Why Are Oceans so Important? Oceans make up over 70% of the Earth’s surface. There are over 700,000 different species of animal that live in the ocean. It is important to protect the oceans to make sure their habitats are safe. The ocean is also full of tiny plants which help to produce oxygen, which we need to breathe. On top of this, oceans also provide food for many creatures, including humans! Your Task Label the five oceans of the world. Your Task - Answers Challenge Task 1. What is the biggest ocean? 2. What is the smallest ocean? 3. Name some endangered sea creatures that live in the Indian Ocean. 4. Why are oceans important? Challenge Task - Answers 1. What is the biggest ocean? • Pacific Ocean 2. What is the smallest ocean? • Arctic Ocean 3. Name some endangered sea creatures that live in the Indian Ocean. • Turtles, seals or dugongs 4. Why are oceans important? • Different possible answers.

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North America Other Continents
Arctic Ocean Europe North Asia America Atlantic Ocean Pacific Ocean Africa Pacific Ocean South Indian America Ocean Oceania Southern Ocean Antarctica LAND & WATER • The surface of the Earth is covered by approximately 71% water and 29% land. • It contains 7 continents and 5 oceans. Land Water EARTH’S HEMISPHERES • The planet Earth can be divided into four different sections or hemispheres. The Equator is an imaginary horizontal line (latitude) that divides the earth into the Northern and Southern hemispheres, while the Prime Meridian is the imaginary vertical line (longitude) that divides the earth into the Eastern and Western hemispheres. • North America, Earth’s 3rd largest continent, includes 23 countries. It contains Bermuda, Canada, Mexico, the United States of America, all Caribbean and Central America countries, as well as Greenland, which is the world’s largest island. North West East LOCATION South • The continent of North America is located in both the Northern and Western hemispheres. It is surrounded by the Arctic Ocean in the north, by the Atlantic Ocean in the east, and by the Pacific Ocean in the west. • It measures 24,256,000 sq. km and takes up a little more than 16% of the land on Earth. North America 16% Other Continents 84% • North America has an approximate population of almost 529 million people, which is about 8% of the World’s total population. 92% 8% North America Other Continents • The Atlantic Ocean is the second largest of Earth’s Oceans. It covers about 15% of the Earth’s total surface area and approximately 21% of its water surface area.
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