What defines the Arctic?
The Arctic is the northernmost region on Earth. Most scientists define the Arctic as the area within the Arctic Circle, a line of latitude about 66.5° north of the Equator. Within this circle are the Arctic ocean basin and the northern parts of Scandinavia, Russia, Canada, Greenland, and the U.S. state of Alaska.
How do people describe the Arctic?
The region surrounding the North Pole consists of a large ocean surrounded by land. Some scientists define the Arctic as the area north of the arctic tree line (green line in map at right), where the landscape is frozen and dotted with shrubs and lichens. Other researchers define Arctic based on temperature.
What is the Arctic and why is it important?
Why the Arctic is so important Arctic sea ice acts as a huge white reflector at the top of the planet, bouncing some of the sun’s rays back into space, helping keep the Earth at an even temperature. The Arctic also helps circulate the world’s ocean currents, moving cold and warm water around the globe.
What is the definition of Arctic for kids?
The Arctic is the area around the Earth’s North Pole. The Arctic includes parts of Russia, Alaska, Canada, Greenland, Lapland and Svalbard as well as the Arctic Ocean. It is an ocean, mostly covered with ice. Most scientists call the area north of the treeline Arctic.
What is Arctic and Antarctic?
The Arctic is an ocean, covered by a thin layer of perennial sea ice and surrounded by land. (“Perennial” refers to the oldest and thickest sea ice.) Antarctica, on the other hand, is a continent, covered by a very thick ice cap and surrounded by a rim of sea ice and the Southern Ocean.
Why is it called Arctic?
‘Arctic’ comes from the Greek word ‘arktos’, meaning ‘bear’ – the northern polar region is the sacred land of the polar bear, one of the largest land predators on the planet.
Does anyone live in Arctic?
In total, only about 4 million people live in the Arctic worldwide, and in most countries indigenous people make up a minority of the Arctic population. Northern people found many different ways to adapt to the harsh Arctic climate, developing warm dwellings and clothing to protect them from frigid weather.
Who named the Arctic?
“Arctic” comes from the Greek arktos, “bear,” because the constellation Ursa Major, “the greater she-bear” (also known as the Big Dipper), is always visible in the northern polar sky.
Do any animals live in the Arctic?
It sits at the top of world, covered in sea ice—a seemingly unwelcome place for life. Yet the Arctic is actually teeming with wildlife, from large mammals like walruses and polar bears to birds, fish, small plants, and even tiny ocean organisms called plankton. The Arctic region covers much of Earth’s northern pole.
When did the Arctic start melting?
Instead, a pattern of steep Arctic sea ice decline began in 2002. The AO likely triggered a phase of accelerated melt that continued into the next decade because of unusually warm Arctic air temperatures. Arctic ice extent has dropped steeply since 2002.
What are 5 facts about the Arctic?
Arctic facts for kids
- The Arctic is located at the northernmost part of Earth.
- The name ‘Arctic’ comes from a Greek word meaning ‘bear’.
- Winter temperatures can drop below −50 °C.
- Polar bears live in the Arctic, near the North Pole.
- In total, only about 4 million people live in the arctic.
Why is the Arctic called Arctic?
The Arctic is named after the Greek word for bear. The bear is in Greek άρκτος, or kktos, which is also a word in the constellations of the Big Bear (in Greek Μεγάλη Άρκτος) and the Little Bear (in Greek Μικρή Άρκτος), which appear in the northern starry sky. Black bear (Ursus americanus) wanders in Alaska.
