LAKES

[Virtual Presenter] Good morning everyone! I am very pleased to present to you today the work done by Shivansh Koundal from 9th grade concerning Lakes. This will cover how Lakes are formed, their various physical characteristics, examples of Lakes from around the world, and their importance for hydropower, regulating river flow, and tourism. I hope you all enjoy this presentation and take useful information away with you..

LAKES.

[Audio] A lake is a body of water surrounded by land. They can be small or vast, deep or shallow, and wide or narrow depending on their location. Lakes provide us with many benefits, such as aesthetic enjoyment, recreational activities, drinking water, and a habitat for wildlife. Additionally, they may also play a role in the regional weather patterns. This slide examines why lakes are a valuable part of our environment..

[Audio] Lakes are an essential resource on our planet, and they are widespread across many different regions worldwide. Canada, in particular, holds approximately half of the total number of lakes on Earth. Generally, lakes can be found in high latitude areas and mountain regions, resulting in a larger concentration of them in the Northern Hemisphere. Aside from sheer quantity, many other nations have some of the biggest and deepest lakes in the world. In the USA, the largest saline lake is the Great Salt Lake in Utah; the deepest lake is Crater Lake in Oregon..

[Audio] Glaciers play an essential role in the formation of lakes as they are responsible for the erosion and deposition of material. Additionally, shifts in the Earth's crust, craters of extinct volcanoes, landslides, asteroids, and faults can all have a hand in the formation of lakes..

Glaciers.

[Audio] The Great Lakes are an iconic feature of North America. Glaciers formed the large basin that houses the four Great Lakes - Superior, Huron, Michigan, and Ontario - which are connected to each other by rivers and streams, making them unique. Surrounding the Great Lakes are the states and Canadian provinces that have developed in the area, and together, they exert a great influence on the region - economically, socially, and environmentally..

[Audio] Good morning students! Today I am going to talk to you about Lake Titicaca in South America. Located in Peru and Bolivia, it is the highest lake in the world. It was formed by the melting of snow and ice and the basin in the Andes Mountains was created by the folding of the mountains which caused cracks or faults in the earth's crust. Lake Titicaca is an impressive example of the power of nature!.

[Audio] The Taal Lake is a beautiful and picturesque body of water located in the Philippines. It is a remnant of some extinct volcanoes in the region, and is popular among local and international tourists alike. The lake is filled with a variety of fish and aquatic species and also provides a habitat for various water birds. The lake also provides an excellent opportunity for boating, fishing, and other recreational activities..

[Audio] Alabad Lake is situated in Hunza valley of Pakistan and was created as a result of a massive landslide in January 2010. Landslides occur when mud, rocks and debris from mountains move quickly due to gravity and can cause a lot of destruction, as well as blocking of rivers or creating new ones. In this case, Alabad Lake has become a permanent source of water for those living in the valley and the wildlife that inhabit it..

[Audio] Lake systems are intriguing and intricate due to the many physical components that contribute to their formation and development. Light has a significant effect, influencing the proliferation of planktons and other organic elements. Temperature of a lake also varies depending on the season and depth. All these components collectively create the attractive and multifarious lake systems we observe..

[Audio] Oxbow lakes are a fascinating geographical feature created when a meandering river cuts off across a floodplain, causing the water to flow in a loop and form a U-shaped lake. These lakes have an abundance of unique flora and fauna specifically adapted to life in the environment..

[Audio] Glaciers have a major role in forming fresh water lakes. They carve out a shallow depression in the Earth's surface. This basin is then filled with snowmelt, rainwater, and spring water, forming a lake. Fresh water lakes are an essential part of their local ecosystems, housing a wide variety of aquatic species and providing a source of fresh water for the surrounding area..

[Audio] Class, we'll be talking about the fresh water lakes of India. Dal Lake is located in Kashmir and is renowned for its picturesque houseboats. Bhimtal Lake is situated in Uttarakhand and is one of the biggest in the state. Nainital Lake can be found in Uttarakhand and is a hot spot for tourists. Loktak Lake is located in Manipur and is the biggest fresh water lake in North East India. Last, but not least, Barapani Lake is located in Meghalaya and has an astounding view. That concludes today's lesson..

[Audio] Lakes hold immense importance in our lives. They are responsible for generating hydel power, controlling the river flow, preserving the climate in the surrounding areas, managing the aquatic system and even providing recreation. Moreover, they greatly enhance the surrounding natural beauty, making them favorable destinations for tourism. Altogether, lakes offer a variety of services to the environment that are integral to our lives..

[Audio] Today we're talking about lakes. We are discussing three main types of lakes: Chilika Lake, Pulicat Lake and Kolleru Lake, as well as seasonal lakes. Chilika Lake is located in Odisha and is the largest brackish water lagoon in India. It's an important wetland habitat for a variety of aquatic life. Pulicat Lake is located in Andhra Pradesh and Tamil Nadu and is India's second largest brackish water lagoon. It's rich in biodiversity, like Chilika Lake. Kolleru Lake is located in Andhra Pradesh and is the second largest fresh water lake in India. It's home to a large variety of aquatic life, birds and mammals. Finally, seasonal lakes are temporary bodies of water that are formed during the wet season, and they can be incredibly diverse habitats for various species..

[Audio] Today, I'll be discussing a troubling topic: lake pollution. Lakes are vital for their surrounding environment and to our own wellbeing. Unfortunately, lake pollution has become an increasing issue in many parts of the world. Lake pollution can occur due to lake construction, spills of hazardous contaminants, and non-point source stormwater runoff. As a result, a polluted lake can have too much sediment, leading to low water clarity and vegetation disruption, ultimately leading to harm for the surrounding animal life. This is why it is important for us to take steps to prevent lake pollution and to understand the effects of Lake pollution on our environment..

[Audio] It is clear that the increasing amount of pollutants such as sewage, solid waste and construction waste are adversely affecting our lakes. In order to solve this problem, we should refrain from releasing untreated sewage and solid waste into rivers and lakes. Our utmost care should be taken to make sure that construction waste does not get disposed off in rivers. We should also switch to organic farming techniques and abstain from using hazardous pesticides and herbicides. Furthermore, governments should be working together to provide safe water treatment facilities. I hope this presentation has been informative and effective in inspiring people to strive for a more eco-friendly future..

[Audio] Lakes are important for many reasons. They are bodies of water surrounded by land, typically formed by rivers, glaciers and precipitation. They can regulate the local climate, provide sources of food and recreation, and influence water quality, biodiversity and the local and regional economies. There are different types of lakes with varying levels of importance, but all of them provide some beneficial services. For example, glacial lakes offer a unique habitat for fish and other aquatic species, while larger lakes can help regulate local climates and offer water recreation activities. Lakes also help to filter and purify water, making it suitable for drinking, and can also provide habitats for migratory birds and other wildlife. Finally, they offer economic benefits to the local and regional economies as well, such as providing jobs related to fishing and tourism..