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All Words (53 Words)

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Advanced Words (13 Words)

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Word List

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ozonen: a poisonous gas with the chemical formula O3, which has a strong smell
layern: a sheet, quantity, or thickness of the material, typically one of several, covering a surface or body; a level or part within a system or set of ideas
atmospheren: the mass of air that surrounds the Earth; the pervading tone or mood of a place, situation, or creative work
dividev: to separate or cause to separate into parts or groups
tropospheren: the lowest layer of the Earth’s atmosphere, extending from the surface to about 7 to 20 kilometers, where the majority of weather occurs
oxygenn: the chemical element with the symbol O that is present in air and water and is necessary for people, animals, and plants to live
environmentn: the natural world such as air, water, and land in which humans, animals, and plants live
extendv: to broaden in scope, range, or area
peakn: the point to which something or someone is at its strongest, best, or most successful; the pointed top of a mountain
mountv: to increase, go up, or advance gradually or continuously; to prepare and supply with the necessary equipment for execution or performance; to ride on something or someone
stratospheren: the second layer of the Earth’s atmosphere, extending from about 7 to 50 kilometers above the Earth’s surface, containing the ozone layer
moleculen: a group of two or more atoms held together by attractive forces known as chemical bonds
concentrationn: the ability to focus all your time and energy on one thing without thinking about anything else.
approximatelyadv: close to a specific number or time but not exactly that number or time
atomn: the smallest unit of ordinary matter that forms a chemical element, composed of a nucleus and one or more electrons bound to the nucleus
normn: something that is regarded as usual, typical, or standard
absorbv: to take in a fluid or other substance gradually
ultravioletadj: relating to or occupying the part of the spectrum beyond the violet end, especially radiation
radiationn: the energy that comes from a nuclear reaction in the form of rays, waves, or particles and that can be hazardous to health
cataractn: a clouding of the lens in the eye that affects vision; a large waterfall
sunburnn: a painful reddening of the skin caused by overexposure to the sun’s ultraviolet rays
damn: a wall constructed over a river to block the flow of water, mainly used to generate energy
cropn: a plant that is cultivated in large amounts, particularly for food
marineadj: relating to the sea and the creatures and plants that live there
cyclen: an interval during which a recurring sequence of events occurs; a bicycle or motorcycle
splitv: to divide, or to make something divide into two or more parts, especially along a particular line
unstableadj: lacking solidity, persistence, or firmness and therefore not strong, safe, or likely to continue; lacking control of one’s emotions
bindv: to tie or fasten someone or something tightly with rope, string, etc. so that they cannot move or are held together strongly
unfortunatelyadv: by bad luck; unluckily
syntheticadj: made by combining chemical substances as opposed to being naturally occurring
halogenn: a non-metallic element from Group 17 of the periodic table, such as chlorine, bromine, or iodine, which has properties similar to those of the alkali metals
compoundn: an item composed of two or more distinct elements combined; a chemical formed by the combination of two or more elements
interferev: to get involved in and prevent a process or activity from continuing
releasev: to set free or allow to escape from confinement
inventionn: the creation of a new device or process resulting from study and experimentation; the act of inventing
miraclen: an act or occurrence that is not explicable by natural or scientific laws and is therefore believed to be caused by God
stableadj: firm and steady; not easily moved, disturbed, or changed
toxicadj: of or relating to or caused by a poison; poisonous
substancen: the real physical material of which a thing or person consist; the most important or main part of some idea or experience; an illegal drug
refrigerantn: a substance used to transfer heat from one place to another in a refrigeration (the act of making or keeping things cold) system, usually in the form of a liquid or gas
propellantn: a substance that provides the force to propel (= to cause something to move forwards) something, such as a rocket or spray can
sprayn: a fine mist of liquid that is dispersed into the air; flower arrangement consisting of a single branch or shoot bearing flowers and foliage
electronn: a tiny particle with the negative electrical charge
sterilizev: to make something free of all forms of life, especially bacteria or viruses, by using heat, chemicals, or radiation
metricadj: using or relating to the meter as a unit of length; a system of related measures that facilitates the quantification of some particular characteristic
survivev: to live or exist despite a dangerous event or period
chlorinen: a chemical element with the symbol Cl and atomic number 17, a greenish-yellow gas that is highly reactive and used in a variety of applications, including as a bleach and disinfectant
destroyv: to ruin or damage severely or completely; to eradicate or eliminate completely
depletionn: the reduction of something, especially a natural resource, to a critically low level
protocoln: a set of rules or procedures for transmitting data or conducting a process or activity, especially in computer networks or scientific experiments; the initial or original version of an agreement
banv: to officially or legally forbid or refuse to allow something
mendv: to repair or fix something that is broken or damaged
volcanon: a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are or have been erupted from the earth’s crust.

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