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Vocabulary for IELTS (Academic) - Physics

Here you will learn some English words about physics, such as "charge", "radiation", "flexible", etc. that are needed for the IELTS exam.

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Words for Academic IELTS
to bend
to bend
[Verb]

to make something straight become curved or folded

Ex: She carefully bent the wire into a circle to make a decorative wreath. 
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block
block
[noun]

a large solid piece of material that is square or rectangular in shape and has flat sides

Ex: The children built a tower using wooden blocks. 
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charge
charge
[noun]

the physical property in matter that causes it to experience a force in an electromagnetic field

Ex: Electric charge is a fundamental property of matter that can be positive or negative. 
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force
force
[noun]

(physics) an effect that causes a body to move or change direction

Ex: Gravity is the force that keeps planets in orbit around the sun. 
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nuclear
nuclear
[Adjective]

describing weapons that are powered by the energy produced either from nuclear fission or a combination of fusion and fission reactions

Ex: The country tested a new nuclear bomb that caused global concern. 
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physicist
physicist
[noun]

an individual who is trained in physics

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wave
wave
[noun]

(physics) an oscillating movement by which energy is transferred without the transport of matter, such as light and sound

Ex: Light travels through space in the form of a wave. 
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to activate

to make something such as a process, piece of equipment, etc. start working

Ex: He activated the alarm system before leaving the house. 
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atom
atom
[noun]

(science) the smallest part of a chemical element that is found in the nature

Ex: The atom is composed of a nucleus containing protons and neutrons, surrounded by electrons. 
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concrete
concrete
[Adjective]

real and tangible, existing in physical form that can be sensed or experienced

Ex: The detective searched for concrete clues at the crime scene to solve the mystery. 
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flexible
flexible
[Adjective]

capable of bending easily without breaking

Ex: The flexible plastic tubing is used to transport liquids in laboratories and industries. 
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field
field
[noun]

(physics) the space or area within which the effect of a particular force exists

Ex: The gravitational field of Earth pulls objects toward its center. 
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to contract

to become smaller, narrower, or tighter

Ex: When exposed to cold temperatures, blood vessels tend to contract. 
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to crack
to crack
[Verb]

to break on the surface without falling into separate pieces

Ex: The frozen lake began to crack as temperatures rose, creating patterns on the surface. 
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matter
matter
[noun]

a physical substance that occupies space and exists in every material in the universe

Ex: All objects, whether solid, liquid, or gas, are made of matter. 
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pressure
pressure
[noun]

(physics) the amount of force exerted per area that is measured in pascal, newton per square meter, etc.

Ex: The pressure inside the scuba tank reached 200 atmospheres. 
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motion
motion
[noun]

a natural process involving a change in position or orientation of an object

Ex: The planet's motion around the sun is elliptical. 
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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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to react
to react
[Verb]

(physics) to be subject to physical or chemical change

Ex: When sodium reacts with water, it produces sodium hydroxide and hydrogen gas as byproducts. 
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to accelerate

to increase the velocity of something

Ex: The physicist designed an experiment to study how magnetic fields can accelerate charged particles to high velocities. 
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to bond
to bond
[Verb]

(chemistry) to merge or be merged by a chemical bond

Ex: In the reaction, hydrogen atoms bond with oxygen atoms to form water molecules. 
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to circulate

to constantly move around a gas, air, or liquid inside a closed area

Ex: The fan helps circulate air throughout the room, keeping it cool and comfortable. 
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density
density
[noun]

(physics) the degree to which a substance is compacted, measured by dividing its mass by its volume

Ex: The density of water is approximately 1 gram per cubic centimeter (g/cm³). 
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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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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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frequency
frequency
[noun]

the number of times an event recurs in a unit of time

Ex: The frequency of his visits to the gym increased over the summer. 
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gravity
gravity
[noun]

(physics) the universal force of attraction between any pair of objects with mass

Ex: Gravity is what keeps the planets in orbit around the Sun and the Moon in orbit around the Earth. 
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mass
mass
[noun]

(physics) the property of matter that gives it weight in a gravitational field and is a measure of its inertia

Ex: In physics, mass is a measure of the amount of matter in an object. 
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magnetic
magnetic
[Adjective]

produced by or relating to magnetism

Ex: The magnetic field around the magnet attracts nearby metal objects. 
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to reinforce

to strengthen a substance or structure, particularly by adding extra material to it

Ex: The builder decided to reinforce the foundation of the house by adding additional support beams. 
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