- Why do scientists take turns to go to Antarctica?
- Why is Antarctica permanently frozen?
- What will happen to Antarctica in 2100?
- Why was Antarctica at the South Pole 251 million years ago?
- When was the last time Antarctica was covered in ice?
- How does Antarctica affect the rest of the world?
- What was the climate like in the past in Antarctica?
Why do scientists take turns to go to Antarctica?
Antarctica is too cold for people to live there for a long time. Scientists take turns going there to study the ice. The oceans around Antarctica are home to many types of whales. Antarctica is also home to seals and penguins.
Why is Antarctica permanently frozen?
Temperatures can plummet to -58°F, which is 90°F below freezing (32°F is freezing). Antarctica is so cold that most of the ice there never melts; the continent is permanently covered in ice. They can do this because some water remains unfrozen, and they can dive and re-surface through these holes in the ice.
What will happen to Antarctica in 2100?
In a 3°C warming scenario, crucial ice shelves holding back Thwaites and other West Antarctic glaciers could destabilize, triggering instabilities. Under this scenario, the ice sheet could be responsible for closer to 6 inches of global sea level rise by 2100.
Why was Antarctica at the South Pole 251 million years ago?
At that time, Antarctica was still at the South Pole. The scientists were hoping to find fossils from the Permian Period, as this period ended 251 million years ago with a mass extinction caused by a sudden shift from icehouse to greenhouse conditions. During this time, more than 90 percent of species disappeared, including the polar forests.
When was the last time Antarctica was covered in ice?
Scientists already knew that 55 million years ago Antarctica was ice-free and forested. The continent’s vast ice sheets began forming around 38 million years ago, with the Antarctic Peninsula being the last place to be covered in ice.
How does Antarctica affect the rest of the world?
And, as Antarctica holds about 90% of all the ice on the planet, what happens in Antarctica will have major effects on the rest of the world. Before looking further at what we have learned about climate change from Antarctica, it’s worth reviewing some key concepts about evidence and timescales.
What was the climate like in the past in Antarctica?
Antarctica hasn’t always had the climate that it has now. In the geological past Antarctica has been much warmer, and fossils indicate that at various times trees have covered much of the continent.