Important (Read me first!)

This post is a commentary and does not contain any copyrighted material of the reference source.

We strongly recommend accessing/buying the reference source at the same time.

Reference Source

https://www.ets.org/toefl/test-takers/ibt/prepare/practice-tests.html

You can understand each word more deeply by utilizing the following YouTube Posts and PDF files.
Also, see how to use Englist.me?

All Words (77 Words)

You can learn all the words from basic to advanced levels in the order they appear in the contents.
If you want learn all words quickly, you can use Quick Look Video.

Quick Look

Podcast

Advanced Words (32 Words)

If you are confident in your vocabulary, you may prefer to study with content that covers only advanced-level words.

Word List

You can quickly review the words in this content from the list below.

Word	Meaning	Advanced
liquid	n: a substance, such as water or oil that flows freely and is neither a solid nor a gas
quantity	n: the amount or number of something; magnitude
Mars	n: a small reddish planet that revolves around the sun at the fourth position and is periodically visible to the naked eye
runoff	n: the occurrence of surplus liquid such as water that exceeds the limit or capacity; another competition, election, race, etc., following a tie or inconclusive outcome
outflow	n: the leakage of fluid from a container; a natural flow of groundwater
highland	adj: an area of elevated land or hilly terrain
extensive	adj: covering a large area; having a wide range
interconnect	v: to connect similar things
twist	v: to bend or turn something into a certain shape
merge	v: to combine or integrate things, or to cause this to happen
resemblance	n: similarity in appearance or exterior or superficial details
earthy	adj: relating to or like earth or soil; not far removed from or suggestive of nature
geologist	n: a scientist or specialist who studies geology
rainfall	n: the amount of rain that falls in a specific location at a particular moment
valley	n: a long depression on the surface of the land, which typically contains a river
Martian	adj: of or relating to Mars or its imaginary inhabitants
atmosphere	n: the mass of air that surrounds the Earth; the pervading tone or mood of a place, situation, or creative work
widespread	adj: existing or happening in various places or among many people
relic	n: an object from a previous era, especially one of historical value
catastrophic	adj: extremely harmful; causing physical or financial destruction
flood	n: a large amount of water flowing beyond its normal limits; an overwhelming number or amount
equator	n: an line of latitude that separates Earth’s northern and southern hemispheres and has a radius of around 40,075 kilometers (24,901 miles)
volume	n: the amount of space occupied by an object or substance; the magnitude of sound
drain	v: to empty or dry something by removing the liquid from it
plain	adj: without being decorated in any way; (Noun) a vast expanse of flat land with few trees
onrush	n: a strong forward rush or flow; an offensive against an enemy
flash	n: a sudden intense burst of radiant energy; a momentary brightness
odd	adj: strange or unexpected; not divisible by two
teardrop	n: anything shaped like a falling drop as a pendant gem on an earring; a single tear that falls from the eye
resemble	v: to look like or be similar to someone or something
miniature	adj: being on a very small scale
tide	n: the cyclical rise and fall of sea level caused by the moon’s gravitational pull
judiciary	n: persons who administer or enforce justice
depth	n: the distance between the top and bottom of something; between the top surface and a distance below it
approximately	adv: close to a specific number or time but not exactly that number or time
volcanic	adj: relating to or produced by or consisting of volcano
speculate	v: to form a theory or conjecture or guess about a subject without solid evidence
extended	adj: longer than usual or anticipated
adorn	v: to make something or somebody more attractive or beautiful
surveyor	n: an engineer who measures and records the details of areas of land
specialize	v: to become an expert in a specific career field, study, or business
sediment	n: the substance that forms a solid layer at the bottom of the liquid
crater	n: a huge bowl-shaped cavity in the earth or an object in space, usually created by an explosion or the impact of a meteorite
expanse	n: a substance, such as water or oil, that flows freely and is neither a solid nor a gas
compute	v: to make a mathematical calculation
polar	adj: relating to, or close to, the North or South Pole; characterized by complete opposites
extent	n: the point or degree or area to which something extends
ancient	adj: relating to the long ago, particularly the historical period preceding the fall of the Western Roman Empire; very old
lowland	n: low-lying country or region
basin	n: a natural depression or valley that is circular or oval on the surface of the earth, especially one that has water in it; a container with a bowl form that is typically used to hold food or liquids
rim	n: the edge of something in the shape of a more or less circular object
controversial	adj: causing a lot of hot public discussion and dispute
proponent	n: a person who supports an idea or pleads for a cause
terrace	n: commonly paved outdoor space next to a house; a row of homes that were all constructed in the same design and shared dividing walls
conceivable	adj: imaginable or possible to understand or believe in the mind
evaporate	v: to turn a liquid into a gas; to become less intense and disappear gradually
shoreline	n: a line that separates land and sea
recede	v: to pull back or move away or backward
detract	v: to diminish the value or worth of a quality or performance
geology	n: a science that deals with the history of the earth as recorded in rocks
depressed	adj: sad and without any hope
hemisphere	n: half of the terrestrial globe; half of a sphere
carbonate	n: a carbonic acid salt or ester that contains the anion CO3
compound	n: an item composed of two or more distinct elements combined; a chemical formed by the combination of two or more elements
carbon	n: a chemical element that can be found in pure form as diamond or graphite, and it is also an essential part of coal and oil and is found in all plants and animals
abundance	n: a significant amount of something; the situation in which there is too much of something
absence	n: the fact or condition of being away from a place where they are typically anticipated to be
imply	v: to indicate the truth or existence of something without referring to it
planet	n: any of the nine large celestial bodies that circle in the solar system; any celestial body that revolves around a star
gully	n: deep water-cut trench, especially after a prolonged downpour
inconclusive	adj: without any significant results or proof or decision
astronomer	n: a physicist who studies astronomy
vapor	n: a mass of tiny liquid drops in the air
unproven	adj: not tested or proved
hint	n: an indirect suggestion; a slight but appreciable amount of something
virtually	adv: almost completely
permafrost	n: a layer of soil that is permanently below freezing, usually in polar regions