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jiya tailor

on 13 December 2016

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Transcript of Energy

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Energy-(Fossil Fuels)
how do humans depend on fossil fuels?

The United States gets 81% of its total energy from oil, coal, and natural gas, which are all fossil fuels. We depend on those fuels to heat our homes, run our vehicles, power industry and manufacturing, and provide us with electricity. Eventually ,when all fossil fuels diminish, the effect of their continued use on our planet grows more critical. But shifting to new energy sources will take time.
In 2015, 33.2% of U.S. electricity came from coal— roughly equal to natural gas (32.7%), but greater than nuclear power (20%) or renewable energy sources (13%).

what are fossil fuels?

also called petroleum, is the most often discussed form of fossil fuel in the world today,), oil has a long history of maximizing adaptability and convenience for human civilization. Today, we think of oil as the fuel that we pump into our cars at gas stations, but refined gasoline is not what comes out of the ground at oil wells.Today, crude oil is the type of petroleum that occurs naturally. In the United States, we get our crude oil from multiple sources,the down side is that most of it is not mined domestically and must be purchased from the Middle East. Due to this dilemma, recent wars fought by the United States in that part of the world have caused many Americans to question current society’s reliance on fossil fuels and to urge a greater movement toward alternative energy development. Once crude oil arrives in the United States, it is taken to refineries, where it is processed into fuel that we can actually use. From any given gallon of crude oil, these refineries produce a range of different oil substances that are then used for different applications. A little less than half of the average barrel of oil is refined into gasoline, which is indeed the type of petroleum that we use to fuel our cars. However, other parts of the barrel are refined into oil for asphalt, jet fuel, kerosene, lubricants, and more. These different categories showcase how widespread the use of oil truly is
what kinds of fossil fuels are there?
how do plants make fossil fuels?
Fossil fuels were created millions if years ago.The process began when tiny plants and animals living in the oceans of the world died, they would sink down and settle on the ocean floor. This organic matter was eventually covered by layers of sand, rock and mud that later turned into sedimentary rock.
As these layers of rock grew thicker and thicker, the organic matter ended up being placed under a great amount of pressure. Over the millions of years that passed, this high pressure transformed the partially decomposed plant and animal matter into the major energy source that we know as oil and natural gas

By; Jiya, Saudah, Emily, Mikaia
How are fossil fuels energy?
There are three main types of fossil fuels which can all be used for energy stock; coal, oil and natural gas
one of the three types of fossil fuels, coal is the only one still in a solid state. It appears as chunks of midnight black rock, which is gathered from the Earth by workers in mining operations. Coal is suppressed of five different elements: carbon, nitrogen, oxygen, hydrogen, and sulfur, with the distributions of those five elements differing depending on the piece of coal. In fact, because of these differing elemental situations, there are actually three different types of coal, each with different energy properties. The highest in energy content is anthracite coal, which is harder and has a higher distribution of carbon than the other varieties. The other two types of coal – lignite and bituminous – aren’t quite as rich in energy, but still have their uses. Lignite is high in oxygen and hydrogen instead of carbon, while bituminous occupies a sort of moderate medium between the two extremes. Coal is a dynamic fossil fuel depending on how it is used. Depending on the different coal uses that you look at, you might see the top uses listed as a generic “electricity generation” or “electrical utilities,” or you might see things broken down a bit into smaller categories. In any case, coal today is used for everything from producing steel and cement to keeping the lights on in homes and businesses.
Natural Gas
The final type of fossil fuel is natural gas. Where coal is a solid and oil is a liquid, natural gas is, of course, a gas. It is made up primarily of methane and is incredibly lightweight (as well as incredibly flammable). In the United States, natural gas is used primarily to heat homes, power air conditioning systems, and fuel stoves and other cooking appliances. Usually, when a mining operation locates a petroleum reserve, it will also have found a source of natural gas. These two types of fossil fuels simply tend to occur close to one another underground, making mining and harvesting the two resources thankfully efficient once they are found. Unlike oil, though, which is pumped from the ground by massive oil rigs, natural gas is channeled into pipeline. These pipelines take the natural gas to storage facilities, eventually making its way to your home to meet a portion of your energy needs. When we use natural gas for cooking, we often notice a distinctive smell that we associate with the gas. Interestingly, natural gas is odorless when it is mined from beneath the Earth’s surface, with the smell being added later as a means of alerting people to leaks of the substance.

The most simple way to describe fossil fuels is that it is a term used to describe a group of energy sources that were formed from ancient organisms such as plants and animals during the Carboniferous Period, approximately 360 to 286 million years ago, prior to the age of dinosaurs.

Fossil fuels are a great source of energy because they originate from living things. We know that plants and trees use sunlight to make food from carbon dioxide and water, using the process called photosynthesis. . This energy from the sun gets stored in the plants and transferred to any animal that eats the plants since the plants are producers.
The dead plant and animal matter sank into the water and was buried with much of their substance intact. This allowed the energy within them to remain as they were transformed.
You can imagine
How concentrated the energy is within fossil fuels. The plant and animal matter has sunk into the water and has been greatly compressed. One real life example , would be a bag of raw spinach. It takes up quite a bit of space, just like a plant would. Now put the spinach into a pot with a little bit of water, and cook it up. Suddenly, your pan only has a couple of inches of spinach at the bottom, all compressed into a dense layer of mush. All of the nutrients in the spinach leaves are now concentrated, just like the energy in fossil fuels
how will taking out fossil fuels affect the environment?
How are fossil fuels good for the environment?
how are fossil fuels bad for the environment?
how do fossil fuels affect earth's temprature?

If there were no fossil fuels,
The shortage of of fossil fuels would cause the world population to decrease even lesser than what it is today. Accessibility of food depends upon the quantity of resolvable nitrogen in the soil. Nature gives majority of this nitrogen depending on the action of fungi that live off on the roots of some vegetation, such as soy beans and clover. Humans pitch in resolvable nitrogen to the soil by manufacturing fertilizers from the Haber Bosch process which allows the use of natural gas. Without natural gas to operate the Haber Bosch process, the availability of resolvable nitrogen, and hence the amount of food, would be much lower, and the world population would be approximitly half of what it is now.

some things such as Coal mining can be damaging to the environment if decision is not ` taken to protect and restore the environment where mining takes place. Since mining activities often come into action with water resources, getting rid of possibly harmful effects on the water has long been a primary concern. However, millions of dollars are spent by coal producers to contain, treat, or prevent damage to ground and surface waters.
also, finding, producing, moving, and using oil produces can cause problems for our environment like air and water pollution such as Exploring and drilling for oil may disturb land and ocean habitats.
fossil fuels are good for the environment because they are Easily Available: Since these fossil fuels are such a great source of energy, more productions are going on every day. The geologists all around the world are trying to find out more mines of coals. With the advancement in science and technology, the refineries and the extraction procedures have gotten a lot better which makes makes the availability of fossil fuels even more simple.Fossil fuels are also good for the environment because they help Produce Large Amounts of Energy: Fossil fuels have been providing us with energy for centuries. It is considered as a portable form of energy. scientists popularized the usage of fossil fuel in the entire planet. All machines, devices, vehicles depend on the fossil fuels, whether its coal, petroleum or natural gas.

When fossil fuels are burned they release carbon dioxide into the atmosphere which contributes to global warming. Using fossil fuels to generate energy also releases pollutants into the atmosphere such as sulphur dioxide which can harm the ecosystem in many different ways.Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2. To a lesser extent, the clearing of land for agriculture, industry, and other human activities has increased concentrations of greenhouse gases.
Which plants are used for the purpose?
Although there can be many different kinds of plants, there is 1 thing all the plants used in the process of making fossil fuels will have in common which is that they will all be perished (dead)
Thank you for listening and we hope you gained some knowledge on fossil fuels!
did you know...
-it takes millions of years for fossil fuels to develop.

-The fossil fuels we use today began forming during the Carboniferous Period which was before dinosaurs ruled the Earth.

-Oil, also called petroleum, is pumped from underground and can be turned into products such as gasoline and electricity.

-if your house uses natural gas for cooking and heating, this is a form of a fossil fuel that lies underground usually above oil.

-coal is another fossil fuel used to generate electricity and is found closer to the Earth's surface.

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