Oceans of the world

The arrow in this map is pointing to the

• North Atlantic.

• South Atlantic.

• Mid-Atlantic Ridge

• equator

In the map above, where is the Pacific Ocean?

• A only

• B and C

• C only

• A and D

Info: The Indian Ocean brings powerful winds, called monsoons, to India and parts of Southeast Asia. Which of these would not be an effect of summer monsoons?

• flooding in coastal regions of Bangladesh

• roofs torn off homes in Sri Lanka

• a good rice harvest in India

• people in Thailand wearing warm, heavy coats

Info: The oceans of the world are all connected, but humans have divided them into different bodies of water and given them names. The Atlantic, Pacific, Indian and Arctic Oceans used to be the four oceans that everyone accepted. In 2000, the government suggested a fifth ocean: the Southern Ocean. The Southern Ocean would be the water that extends from Antarctica to the line of 60 degrees south latitude.

Q-Which of the following was true before the year 2000?

• the southern ocean was very similar to the atlantic ocean and very different from the pacific ocean

• all of the world's oceans were closer together

• Many people didn't consider the water south of the 60 degree south line of latitude to be separate ocean

• most people in correctly believed that whales and seals only lived in the north, atlantic, and pacific oceans

Which of these cannot be found in the Arctic Ocean?

• some frozen waters

• Lake Superior

• polynyas

• North Water

Some ocean trenches are formed by

• tectonic plates colliding

• mountains moving into canyons

• Earth’s crust freezing into a solid

• ocean water freezing into ice

Info: There is a system of movement that carries water through all the world’s oceans. Known as the great ocean conveyor belt, a full cycle takes about 1,000 years. The movement is powered by wind, tides, Earth’s rotation, the sun and differences in water density. Which of these best describes the “great ocean conveyor belt”?

• the areas of land that physically separate the world’s oceans

• the circulation of water through all the oceans on Earth

• another name for the Bering Strait and the Greenland Sea

• the difference in water densities between two different oceans

Info: In the Pacific, garbage from the shore and ships can get trapped by certain currents. Acting like a whirlpool, these currents move the trash into an area twice the size of Texas in the middle of the Pacific Ocean known as the Great Pacific Garbage Patch. The swirling mass contains mostly tiny plastics that mix in the seawater, creating a cloudy soup. Which of these would most likely be a result of the Great Pacific Garbage Patch?

• sea lions and other marine mammals dying from eating plastic they mistake for food

• a particularly strong warm ocean current attracting a variety of fish near Florida

• warm water reaching England

• cloudy weather over Hawaii