Although it may not feel like it, we are currently in an ice age today. An ice age is just a period of time when the Earth’s climate faces a radical decrease in temperature and remains constant. Periods of colder temperature during an ice age have been called "glaciations" because they result in something being covered by glaciers or ice sheets. Intervals of warmer, irregular temperatures have been called "interglacials", which is what we are currently living in today (Eldridge and Biek). However, some scientists believe that the climate may dramatically decrease in the near future, and we could see glaciers return again like we did in the last glacial period. This last glacial period is referred to as “The Ice Age.” It was the most recent glacial period within our …show more content…
This is also the case for Yellowstone and Yosemite National Park. Near Inspiration Point on the Grand Canyon in Yellowstone, a boulder-sized piece of granite sits in the middle of nothing. It traveled a great distance on the Pinedale glacier from Beartooth Mountains, and then was left alone once the ice retreated (National Nature Park Service). This rock is different from others in the Yellowstone bedrock, and displaced rocks of any size, which have been moved by glaciers to a different location outside of their own geology, are referred to as glacial “erratics” (National Nature Park Service). Erratics cover a large majority of Yosemite National Park. Yosemite is also home for "striations" which are groves and scratches in the valley's bedrock (Wirth). These markings simply prove that glaciers scoured their way through the valley. These glaciers, along with stream erosion, have also deepened Yosemite Valley, widened it and produced the incredibly steep valley walls like the ones we see in other parks that have been overrun by glacial
In the essay, “Global Warming is Eroding Glacial Ice,” Andrew C. Revkin argues that global warming is the primary cause for many of the world’s natural disasters; including flash floods, climate change, and the melting of the polar ice caps. He includes multiple accounts of expert testimony as well as a multitude amount of facts and statistics to support his theory that global warming is a threat to the world. However, in the essay “Cold Comfort for ‘Global Warming’,” Phillip Stott makes the complete opposite argument. He argues that global warming is nothing to be worried about and the melting of the polar icecaps is caused by the interglacial period we are currently in. After reading both of these essays and doing extensive research on both viewpoints, I completely agree with Revkin that global warming is an enormous threat to our world today. My research not only helped me to take a stand but it also showed me the invalidity in Stott’s essay.
Cuyahoga Valley National Park was formed the same way that most other valleys were. It is believed that long before the ice age occurred an ancient river carved through this area. This river left behind deposits that after millions of years transformed into the parks sandstone bedrock. As the ice age came into effect, this river froze and became part of a glacier that had an even bigger effect on the landscape of the valley. These glaciers scraped through northeastern Ohio and in the process left behind deposits that now make up the parks fertile soil (“Rock, Ice, and River”).
The Little Ice Age was a period of time in which parts of Europe and North America were exposed to colder winters than those generations before and after. This phase lasted a surprisingly long time from around the 1300’s to about 1870. Although it is not considered to be a full on “ice age”, it is said to have many effects on history including important roles on defining how we currently live today.
The Little Ice Age by Brian Fagan is a novel that discussed different climate periods that occurred. The setting of the novel occurred in Europe from 1300 to 1850. Throughout that time period the climate in Europe was changing quite drastically. The layout of this book was done chronologically and thematically. Fagan broke down the book into four different parts: Warmth and its Aftermath, Cooling Begins, The End of the “Full World”, and The Modern Warm Period. He also went further into breaking down each section from discussing the medieval warm period, to the climate seesaw, then to the specter of hunger, finally to a warmer greenhouse as well as other things in between. The way he wrote the book was not based on his personal experience. It
... might not develop back to normal conditions, in which case the demise of the Greenland ice sheet and the associated sea-level rise might be irreversible. For this reason, the Greenland ice sheet is often described as a relict ice mass. It survived the current Holocene interglacial solely because it creates its own cold surface-climate because of its elevation. The last time Greenland temperatures were several degrees higher than today was the last interglacial 125,000 years ago. Ice core evidence for a smaller ice sheet is consistent with the observation that sea level then was several meters higher than today. At that time, the ice sheet did not disappear completely, probably because the warming was not strong enough and did not last long enough. The ice sheet was probably saved from extinction by the onset of the last glacial period several thousand years later.
The foundation of the Great Lakes began around three billion years ago, which is known as the Precambrian Era. The Precambrian Era contains numerous ecological events, which consists of volcanic activity to erosion to the mountains and hills seen today being formed. Then during the Pleistocene Epoch or known as the “Ice Age, occurred between 1.6 million and 10,000 years ago. At least four times during the Pleistocene Epoch, large masses of ice advanced and retreated over the surface of what is now North America. As the glaciers advanced, giant sheets of ice flowed across the land, leveling mountains and carving out massive ...
The Great Ice Age caused changes to the geographical setting of North America which affected its consequent history. Around 35,000 years ago, the glaciers froze over most of the world’s oceans, which led to sea levels lowering, ultimately revealing a land bridge connecting Eurasia and North America in the space of the present-day Bering Sea. This was extremely important for the colonization of North America since groups of Nomadic Asian hunters used it to travel to the continent, possibly to follow prey; the land bridge was used for some 250 centuries before finally becoming flooded 10,000 years ago. The end of the Ice Age also changed North America’s history because it left all people in isolation on the continent. The population was forced
Climate Change is any substantial change in climate that lasts for an extended period of time. One contributor to current climate change is global warming, which is an increase in Earth’s average temperature. Plants and animal species throughout the world are being affected by rising temperatures. Many plants are flowering earlier now than they once did; animals, such as the yellowbellied marmot, are emerging from hibernation earlier; and many bird and butterfly species are migrating north and breeding earlier in the spring than they did a few decades ago, all because of slight changes in temperature cues. (Shuster)
Climate change has been considered by several scientists to be the most earnest threat facing the world today. To begin with, a basic definition of climate change is that it is the long -term shift in weather conditions and that a change in climate would be due to either natural processes or human activity. Climate change can be studied through drilling into glaciers in Greenland and Antarctica. From there, scientists are able to gather significant information about past climate changes, and future climate changes. For example, for around the past 12,000 years, we have been lucky enough to live in an interglacial period, in which we are able to live in a warmer climate. From the data collected, scientists estimate that this interglacial period will last for another 15,000 years. However, this may not be the case if human activities gravely alter the Earth's climate. The impact humans have caused towards the Earth can be deadly for all aspects of the environment. It is important to find a solution.
Climate change is evidenced through shifts in the weather patterns such as winds, humidity and temperatures over certain durations. Natural climate changes occur less frequently and they are triggered by factors related geographical aspects as well as solar radiation. The earth’s movement on the orbit triggers changes in climate causing some areas to have higher temperatures than usual while others are significantly cold depending on the position of the earth on the orbit. The heat form the sun causes changes on the stratospheric ozone and it increases the amount of greenhouse gases. Heat from the oceanic crust also contributes to warming as a result of episodic hydrothermal venting (Liao & Sandeberg, 2012). Volcanic activity also causes a release of certain elements that may block the sun and also contribute to increase greenhouse gases in the atmosphere.
all the time. The greenhouse effect is a natural process that keeps the earth at temperatures that
Glaciers have disappeared due to increasing in global temperatures because of which the water level had drastically increased and its causing flood all over the world
Global Warming One of the most substantial problems in the world today is global warming. This gradual warming of the earth is in occurrence at an extremely slow rate but it is happening. Many scientists believe that as human’s work and release greenhouse gases into the earth’s atmosphere, it can become dangerous for the long lasting life of humans and our environment. “Unless we take immediate action, the impacts of global warming will continue to intensify, grow ever more costly and damaging, and increasingly affect the entire planet - including you, your community, and your family” (“Global Warming Impacts”).
According to the Canada’s Action on Climate Change, Climate change is a long-term shift in weather conditions identified by changes in temperature, precipitation, winds, and other indicators. Climate change can involve both changes in average conditions and changes in variability, including, for example, extreme events. Climate change is one of the biggest crisis in the earth. It will cause a huge damage to the eco-system and human. We are the victims of the climate change. However, we are the one who cause the climate change.
Global warming is one of the most serious issues that the human species face today, yet the majority of the population does not pay attention to it. People are not aware of the dangers and do not care about it much because the main effects will affect the next generation and not themselves. Global warming is happening and it is the reason for changing weather and weather extremes such as earthquakes, floods and wildfires. Global warming is caused by societies lifestyle and these lifestyles destroy the environment and affect the whole world. The use of cars, trains, planes, as well as wasting energy for people’s entertainment has a price; this price is that society is in danger.