biofuel (n)
/ˈbaɪ.əʊˌfjuː.əl/

a fuel that is made from living things or their waste

carbon (n)
/ˈkɑː.bən/

a chemical element that is found in all living things, and can also exist as diamonds or coal

electricity (n)
/ɪˌlekˈtrɪs.ɪ.ti/

a form of energy, produced in several ways, which provides power to devices that create light, heat, etc.

fossil fuel (n)
/ˈfɒs.əl fjʊəl/

Gas, coal, and oil, that were formed underground fromplant and animal remains millions of years ago.

hydrogen (n)
/ˈhaɪ.drɪ.dʒən/

a gas that has no colour or smell and is lighter than air

petrol (n)
/ˈpetrəl/

a liquid used as fuel for cars and other vehicles

turbine (n)
/ˈtɜː.baɪn/

an engine or a machine that uses the pressure of liquid or gas on a wheel to get power

vehicle (n)
/ˈviː.ɪ.kl̩/

a thing that is used for transporting people or goods from one place to another, such as a car or truck

nuclear (a)
/ˈnjuː.klɪər/

relating to energy produced by changing the structure of the central part of an atom

solar (a)
/ˈsəʊ.lər/

relating to the Sun, or coming from the Sun

unleaded (a)
/ʌnˈled.ɪd/

a type of petrol or other substance that does not contain lead

drastic (a)
/ˈdræs.tɪk/

a drastic action or change has a very big effect

efficient (a)
/ɪˈfɪʃ.ənt/

working or operating quickly and effectively in an organized way

rechargeable (a)
/riːˈtʃɑː.dʒə.bl̩/

able to be recharged

absorb (v)
/əbˈzɔːb/

to take something in, especially gradually

conserve (v)
/kənˈsɜːv/

to keep and protect something from damage, change, or waste

consume (v)
/kənˈsjuːm/

to use fuel, energy, or time, especially in large amounts

convert (v)
/kənˈvɜːt/

to (cause something or someone to) change in form or character

deplete (v)
/dɪˈpliːt/

to reduce something in size or amount, especially supplies of energy, money, etc.

discharge (v)
/dɪsˈtʃɑːdʒ/

to allow liquid or gas to leave a place, especially when this has harmful effects