Many ocean gyres are found in what are called the horse latitudes, between 30 and 35 degrees north and south. These areas are known to have calm waters and little precipitation or winds. Legend has it that the name refers to sailing ships that stalled in these latitudes, leading sailors to throw their horses overboard because they were afraid they would run out of water.
to soak up.
to gather or collect.
(singular: alga) diverse group of aquatic organisms, the largest of which are seaweeds.
most powerful surface ocean current in the world, which rotates clockwise around the continent of Antarctica. Also called the West Wind Drift.
a group of closely scattered islands in a large body of water.
region at Earth's extreme north, encompassed by the Arctic Circle.
force per unit area exerted by the mass of the atmosphere as gravity pulls it to Earth.
all the different kinds of living organisms within a given area.
process in which the concentration of a substance increases as it passes up the food chain.
to limit or confine.
line separating geographical areas.
to move around, often in a pattern.
edge of land along the sea or other large body of water.
to contain or be made up of.
measure of the amount of a substance or grouping in a specific place.
to use up.
one of the seven main land masses on Earth.
the result of Earth's rotation on weather patterns and ocean currents. The Coriolis effect makes storms swirl clockwise in the Southern hemisphere and counterclockwise in the Northern Hemisphere.
to bring different sets of data into order, or establish a relationship or connection between them.
steady, predictable flow of fluid within a larger body of that fluid.
remains of something broken or destroyed; waste, or garbage.
to alter from a straight line.
to fall apart and disappear.
Atlantic coast of the United States.
scientist who studies the relationships between organisms and their environments.
rotating column of water formed as ocean surface currents are deflected by the Coriolis effect, wind, and friction forces.
imaginary line around the Earth, another planet, or star running east-west, 0 degrees latitude.
degree or space to which a thing extends.
element contributing to an event or outcome.
group of organisms linked in order of the food they eat, from producers to consumers, and from prey, predators, scavengers, and decomposers.
all related food chains in an ecosystem. Also called a food cycle.
to give money to a program or project.
area of the North Pacific Ocean where currents have trapped huge amounts of debris, mostly plastics.
warm current that starts in the Gulf of Mexico and travels along the eastern coast of the U.S. and Canada before crossing the North Atlantic Ocean.
body of land surrounded by water.
large area of land.
having to do with the ocean.
very large or heavy.
seasonal change in the direction of the prevailing winds of a region. Monsoon usually refers to the winds of the Indian Ocean and South Asia, which often bring heavy rains.
political unit made of people who share a common territory.
half of the Earth between the North Pole and the Equator.
substance an organism needs for energy, growth, and life.
substance an organism needs for energy, growth, and life.
system in which water moves between the cold depths and warm surface in oceans throughout the world. Also called thermohaline circulation.
an area of ocean that slowly rotates in an enormous circle.
person who studies the ocean.
ship, boat, submarine, or other vehicle able to travel the ocean.
having few nutrients and supporting little growth.
having to do with vision or sight.
composed of living or once-living material.
source or ancestry.
small piece of material.
large, spherical celestial body that regularly rotates around a star.
(singular: plankton) microscopic aquatic organisms.
chemical material that can be easily shaped when heated to a high temperature.
large region that is higher than the surrounding area and relatively flat.
having to do with the North and/or South Pole.
animal that hunts other animals for food.
regular or able to be forecasted.
first or most important.
organism on the food chain that can produce its own energy and nutrients. Also called an autotroph.
any area on Earth with one or more common characteristics. Regions are the basic units of geography.
being accountable and reliable for an action or situation.
object's complete turn around its own axis.
region and name for some countries in Northern Europe: Iceland, Norway, Sweden, Finland, and Denmark.
likely to change with the seasons.
important or impressive.
half of the Earth between the South Pole and the Equator.
steady and reliable.
large section of a continent.
circulating ocean current that forms at high latitudes beneath an area of low atmospheric pressure, where wind drives currents away from coastal areas.
circulating ocean current that forms between Earth's polar and equatorial regions, beneath an area of high atmospheric pressure.
degree of hotness or coldness measured by a thermometer with a numerical scale.
ocean conveyor belt system in which water moves between the cold depths and warm surface in oceans throughout the world.
one of three positions on the food chain: autotrophs (first), herbivores (second), and carnivores and omnivores (third).
circulating ocean current that forms in equatorial regions and tends to flow mostly east-west.
process in which cold, nutrient-rich water from the bottom of an ocean basin or lake is brought to the surface due to atmospheric effects such as the Coriolis force or wind.
column of rotating fluid, such as air (wind) or water.
area reaching from the sediment of a body of water to its surface.
movement of air (from a high pressure zone to a low pressure zone) caused by the uneven heating of the Earth by the sun.