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Vocabulary for IELTS (Academic) - Energy and Fuel

Here you will learn some English words about energy and fuel, such as "biomass", "renewable", "radiation", etc. that are needed for the IELTS exam.

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Words for Academic IELTS
biomass
biomass
[noun]

animal or plant substances or other organic matter that is used as a source of fuel

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to burn
to burn
[Verb]

to consume fuel for the production of heat or energy

Ex: The furnace burns coal to produce heat for the entire building. 
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capacity
capacity
[noun]

the ability or power to achieve something or develop into a certain state in the future

Ex: With the right training, he has the capacity to become a world-class athlete. 
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coal-fired
coal-fired
[Adjective]

operated or produced by the use of coal as fuel

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energy
energy
[noun]

(physics) a source of power that is required to do any work that may exist in potential, kinetic, thermal and other forms

Ex: The energy required to lift the box depends on its weight and the height it is lifted. 
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fossil fuel

a fuel that is found in nature and obtained from the remains of plants and animals that died millions of years ago, such as coal and gas

Ex: Burning fossil fuels releases carbon dioxide into the atmosphere. 
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green
green
[Adjective]

(of a substance or product) causing no harm to the environment

Ex: The company prides itself on producing green packaging that reduces waste. 
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power
power
[noun]

the energy that is obtained through different means, such as electrical or solar, to operate different equipment or machines

Ex: The factory relies on solar power to run its production lines. 
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renewable
renewable
[Adjective]

(of a resource, energy, etc.) naturally restored as fast as or faster than they are used up

Ex: Solar energy is a renewable resource that is continuously replenished by the sun's rays. 
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solar energy

power that is obtained from the sun in the form of electrical energy

Ex: Solar energy is a renewable and environmentally friendly power source. 
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solar panel

a piece of equipment, usually placed on a roof, that absorbs the energy of sun and uses it to produce electricity or heat

Ex: The house was equipped with solar panels to reduce energy costs. 
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solid
solid
[Adjective]

firm and stable in form, not like a gas or liquid

Ex: The ice had formed into a solid block after being left in the freezer overnight. 
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steam
steam
[noun]

the hot gas produced when water is heated to the boiling point

Ex: Steam rose from the kettle as the water reached its boiling point. 
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atomic energy

a clean and powerful energy that is obtained by splitting atoms, which then can be used to produce heat, electricity, etc.

Ex: The power plant produces electricity using atomic energy. 
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core
core
[noun]

the central part of Earth, or any other planet

Ex: The Earth's core is primarily composed of iron and nickel. 
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fusion
fusion
[noun]

(physics) a nuclear reaction by which the nuclei of atoms combine and form a heavier nucleus, producing nuclear energy

Ex: The sun's energy comes from hydrogen fusion into helium. 
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meltdown
meltdown
[noun]

the accident in which the core of a nuclear reactor fails to operate and the fuel melts the container releasing an alarming level of radiation

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nuclear reactor

(physics) a structure that harnesses the energy produced from a nuclear reaction and converts it into electricity

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radiation
radiation
[noun]

energy transmitted through space or matter in the form of waves or particles

Ex: The sun emits radiation that warms the Earth. 
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radioactive waste

the dangerous and radioactive byproduct of a nuclear reaction

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smokeless
smokeless
[Adjective]

able to burn with little or no smoke

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to blaze
to blaze
[Verb]

to burn in a very bright and strong flame

Ex: The fire blazed fiercely, lighting up the night sky. 
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to flame
to flame
[Verb]

to burn brightly in a hot gas

Ex: The campfire flamed brightly, illuminating the surrounding area. 
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to ignite
to ignite
[Verb]

to cause something to catch fire

Ex: He ignited the gas stove with a flick of the lighter. 
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to strike
to strike
[Verb]

to make a fire or spark while two surfaces are rubbed against each other

Ex: He struck the match against the box to light the candle. 
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diesel
diesel
[noun]

an engine that uses compression ignition system to burn a type of heavy oil as fuel

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petrol
petrol
[noun]

a liquid fuel that is used in internal combustion engines such as car engines, etc.

Ex: The car stopped on the highway because it ran out of petrol. 
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blackout
blackout
[noun]

a complete loss of electricity in a specific area

Ex: The blackout lasted for hours, leaving the city in complete darkness. 
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current
current
[noun]

a flow of electricity resulted from the movement of electrically charged particles in a direction

Ex: An alternating current is commonly used to power household appliances. 
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electricity

a source of power used for lighting, heating, and operating machines

Ex: During the storm, we lost electricity for a few hours. 
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bioenergy
bioenergy
[noun]

a form of energy that is produced from organic or biological sources, which can be naturally replaced

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biogas
biogas
[noun]

a gas, especially methane, that is produced as a result of the decomposition of animal or plant remains, which is used as fuel

Ex: Biogas offers a sustainable alternative to fossil fuels, reducing greenhouse gas emissions and reliance on non-renewable resources. 
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hydropower

energy that is generated from the force of running water

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green energy

energy that is produced using renewable, environmentally friendly sources, such as wind, solar, or hydroelectric power

Ex: The company is committed to investing in green energy projects. 
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