Dr Asha Anand - Energy resources
Summary
TLDRIn this session, Asha Anand from Christ University’s Department of Life Sciences discusses non-renewable energy resources, explaining their types, examples, and pros and cons. The session covers fossil fuels like coal, oil, and natural gas, as well as nuclear energy, highlighting their formation, uses, and environmental impact. While these energy sources are abundant and high in energy density, they contribute to pollution, climate change, and health risks. The speaker concludes by emphasizing the importance of mindful use due to the finite nature of non-renewable resources.
Takeaways
- 🔬 Energy is defined as the capacity of a system to perform work.
- 🌿 Energy resources are natural resources of power that can be converted into usable forms like electricity and heat.
- ♻️ Energy resources are classified into nonrenewable and renewable based on their origin and availability.
- 🚫 Non-renewable energy resources are finite and cannot be replenished quickly, including fossil fuels and nuclear energy.
- 🌋 Coal, a combustible sedimentary rock, is used for heat and electricity generation and is a type of fossil fuel.
- 🛢️ Oil, or petroleum, is a liquid fossil fuel used for transportation, heating, and electricity, and as a raw material for chemicals.
- 💨 Natural gas, primarily methane, is used for heat, electricity, and as vehicle fuel, and is another type of fossil fuel.
- ⚛️ Nuclear energy is non-renewable and involves processes like nuclear fission and fusion to release energy.
- 🌐 Nuclear fission uses elements like uranium and plutonium, while fusion involves combining lighter nuclei like deuterium and tritium.
- 🌳 Non-renewable resources are advantageous due to their high energy density, making them easy to store and transport.
- 🚫 The disadvantages include the release of toxic compounds causing pollution, contributing to climate change, and adverse health effects.
Q & A
What is the definition of energy according to the script?
-Energy is defined as the capacity of a system to perform work.
How are energy resources classified based on their origin and availability?
-Energy resources are classified as nonrenewable energy resources and renewable energy resources based on their origin and availability.
What is the difference between non-renewable and renewable energy resources?
-Non-renewable energy resources are finite and cannot be generated within a short period of time, while renewable energy resources are replenishable.
Why are non-renewable energy resources also called conventional energy resources?
-Non-renewable energy resources are called conventional because they are traditional sources of energy and have been widely used for many years.
What are the main categories of fossil fuels mentioned in the script?
-The main categories of fossil fuels mentioned are coal, oil or petroleum, and natural gas.
What is the primary chemical composition of coal?
-The primary chemical composition of coal is carbon, hydrogen, oxygen, nitrogen, and some amount of sulfur.
How is oil, or petroleum, formed according to the script?
-Oil, or petroleum, is formed from dead planktons buried under layers of sand at the bottom of the sea.
What is the main component of natural gas?
-The main component of natural gas is methane.
What are the two categories of nuclear energy mentioned in the script?
-The two categories of nuclear energy mentioned are nuclear fission and nuclear fusion.
What are the advantages of non-renewable energy resources as discussed in the script?
-The advantages of non-renewable energy resources are that they are easily accessible and extractable, and they have high energy density, making them easy to store and transport.
What are the disadvantages of using non-renewable energy resources according to the script?
-The disadvantages include the release of highly toxic compounds or gases, contributing to environmental pollution, climate change, and harmful health impacts such as respiratory diseases and cardiovascular problems.
Outlines
🌱 Introduction to Non-Renewable Energy Resources
Asha Anand, from the Department of Life Sciences at Christ University, introduces the topic of non-renewable energy resources. She defines energy as the capacity of a system to perform work and describes energy resources as natural sources that can be converted into usable energy, such as electricity and heat. Energy resources are classified into two categories: non-renewable and renewable. Non-renewable energy resources are finite and cannot be replenished in a short period, making them conventional sources of energy. Examples include fossil fuels and nuclear energy. The first category discussed is coal, a combustible rock formed from plant remains and used primarily for heat and electricity generation. The next category is oil (petroleum), a liquid fossil fuel formed from dead plankton and used in fuels like gasoline and diesel, as well as in the production of plastics. Natural gas, mainly composed of methane, is another fossil fuel used for heat, electricity, and vehicle fuel. Nuclear energy, released from the atom's nucleus, is categorized into nuclear fission and fusion, both used for generating heat and electricity. The paragraph ends with an overview of the various non-renewable resources discussed.
⚠️ Environmental and Health Impacts of Non-Renewable Energy
This paragraph highlights the environmental and health impacts of non-renewable energy resources. It points out that while these resources are accessible, have high energy density, and are easy to transport, their use comes with significant disadvantages. Fossil fuels release toxic compounds like carbon dioxide, sulfur dioxide, and nitrogen oxides during combustion, contributing to air, water, and land pollution. This pollution drives environmental issues such as global warming, climate change, and acid rain, which damages forests and buildings. The negative health impacts include respiratory and cardiovascular diseases, particularly for those living near extraction sites or power plants. The paragraph concludes by emphasizing the limited availability of non-renewable resources and the importance of mindful usage due to their associated pros and cons.
Mindmap
Keywords
💡Energy
💡Non-renewable energy resources
💡Fossil fuels
💡Coal
💡Oil (Petroleum)
💡Natural gas
💡Nuclear energy
💡Nuclear fission
💡Global warming
💡Acid rain
Highlights
Energy is the capacity of a system to perform work.
Energy resources are natural resources of power that can be converted to usable energy forms.
Energy resources are classified as nonrenewable and renewable based on origin and availability.
Non-renewable energy resources are finite and cannot be generated within a short period of time.
Renewable energy resources are replenishable.
Non-renewable energy resources are also called conventional energy resources.
Fossil fuels and nuclear energy come under non-renewable energy resources.
Coal is a combustible sedimentary rock formed from the remains of plants buried under mud for millions of years.
Coal is used for heat generation and electricity generation.
Oil, or petroleum, is a liquid fossil fuel extracted from underground reservoirs.
Liquid fossil fuels are used for transportation, heating, and electricity generation.
Natural gas is a mixture of hydrocarbon gases extracted from underground reservoirs.
Natural gas is used for heat and electricity generation and as a vehicle fuel.
Nuclear energy is released from the nucleus of an atom and is categorized as nuclear fission and fusion.
Nuclear fission involves the splitting of an atom's nucleus, releasing energy for steam and heat generation.
Nuclear fusion involves fusing lighter nuclei, releasing energy for heat and electricity generation.
Non-renewable energy resources are easily accessible and have high energy density.
The combustion of fossil fuels releases highly toxic compounds and gases, contributing to environmental pollution.
Non-renewable energy resources contribute to climate change, acid rain, and harmful health impacts.
We have limited non-renewable energy resources with their own advantages and disadvantages.
It is important to be mindful while using non-renewable energy resources.
Transcripts
welcome everyone I'm Asha Anand from the
Department of Life Sciences Christ
University today's session we will
discuss various non-renewable energy
resources and then we can conclude this
session by analyzing the the pros and
cons of this energy resources first of
all we must know what is energy energy
is the capacity of of a system to
perform work then what are energy
resources energy resources are the
natural resources of power which can be
converted to usable energy such as
electricity heat and other mechanical
energy based upon the origin and
availability of energy resources they
are classified as nonrenewable energy
resources and renewable energy resources
non-renewable energy resources are those
energy resources which are finite
and cannot be generated within a short
period of time whereas renewable energy
resources are
replenishable coming to non-renewable
energy resources they are also called
conventional energy resources because
they are the traditional sources of
energy and have been widely used for
many
years then what are the example of
non-renewable and conventional energy
resources generally fossil fuels and
nuclear energy come under this class
coming to fossil fuels the very first
category in is coal Coal is a
combustible sedimentary rock which is
formed from the remains of the plants
buried under the layer of muds for
billions or millions of
years the chemical composition of coal
is carbon hydrogen oxygen nitrogen and
some amount of sulfur
coal is generally used for the heat
generation and electricity generation
the next category in fossil fuel is oil
or petroleum it is a liquid fossil fuel
which is extracted from the underground
reservoir basically it is formed from
the dead planktons buried under the
layer of Sands in the bottom of
sea they are further refined as fuels
like gasoline Diesel and Jet fuels
liquid fossils fuels are mainly used for
the transportation Heating and
electricity
generation liquid fossils can also be
used as a raw material for the
production of plastics and other
prochemical
products natural gases which is another
category of fossil fuel it is a mixture
of hydrocarbon gases and extracted from
the underground reservoir or produced as
a byproduct of oil extraction
basically they are having more
percentage of methane in them and this
form of energy is used for generation of
heat and electricity and fuel for the
vehicles nuclear energy is another
example of non-renewable energy
resources it is a form of energy which
is released from the nucleus nucleus is
a core of an atom made up of neutrons or
protons further nuclear energy is
categorized as nuclear fusion and
nuclear
fusion as the name suggest nuclear
fusion is a reaction where a nucleus of
an atom splits into two or more smaller
nuclei and releases some amount of
energy which will be used for the
generation of steam and heat the example
of nuclear fishion is uranium and
plutonium fishion next Cate in nuclear
energy is nuclear fusion where lighter
nuclei will be fused for example Fusion
of deuterium and tritium and some amount
of energy will be released that can be
used for the generation of heat and
electricity now we know various
categories of resources of the
non-renewable energy so we can have a
view on the advantages and disadvantages
of this energy resources the advantages
of non-renewable energy resources are
they are easily accessible and
extractable they have high energy
density so that they can be stored
easily and transported easily then what
are the
disadvantages most of the conventional
energy resources are fossil fuels so
once they are extracted processed and
combusion is done they release highly
toxic compounds or gases for example
example carbon carbon dioxide sulfur
dioxide nitrogen oxide and many various
particulate matter which causes
pollution to the air water and land
therefore conventional or non-renewable
energy resources are the major
contributor to the environmental
pollution climate change and harmful
health impact once the carbon dioxide is
released in high amount in the
environment it leads to global warming
and clim climate change sulfur dioxide
when it is dissolved in water it causes
acid rain which is not good for Forest
as well as for the
buildings then the use of conventional
energy resources are having harmful
impact on human
health they cause different kind of
diseases for example respiratory
diseases and cardiovascular problems
particularly to those population who are
living near the the extraction sites or
the power plant
sites in conclusion I can say that we
have limited non-renewable energy
resources with their own advantages and
disadvantages so one should be mindful
while using this resources I hope the
session will be useful for you thank you
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