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Sciences Naturelles SAT - Physics

Ici, vous apprendrez quelques mots anglais liés à la physique, tels que "sonar", "prisme", "diffus", etc., dont vous aurez besoin pour réussir vos SATs.

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SAT Vocabulary for Natural Sciences
amplitude

(physics) the maximum distance a vibrating material, sound wave, etc. such as a pendulum travels from its first position

amplitude

amplitude

Ex: In physics, amplitude refers to the maximum displacement of a wave from its equilibrium position. 
acoustic
acoustic
[Adjectif]

relating to the science of studying sounds or the way people hear things

acoustique

acoustique

Ex: The researchers conducted acoustic experiments to understand how sound waves travel through different materials. 
sonar
sonar
[nom]

a technology that uses sound waves to detect objects underwater or measure distances underwater

sonar, détection acoustique

sonar, détection acoustique

Ex: The submarine navigates using sonar to map the ocean floor and detect potential obstacles. 
prism
prism
[nom]

a solid geometric shape, typically with a triangular base and rectangular sides, that refracts light into its component colors or alters the path of light

prisme, cristal à faces

prisme, cristal à faces

Ex: The light passing through the prism refracted into a spectrum of colors: red, orange, yellow, green, blue, indigo, and violet. 
infrared

electromagnetic radiation with longer wavelengths than visible light, used for applications such as thermal imaging and remote sensing

infrarouge, rayonnement infrarouge

infrarouge, rayonnement infrarouge

Ex: The infrared emitted by warm objects can be detected by specialized cameras to create thermal images. 
ultraviolet

a type of electromagnetic radiation with shorter wavelengths than visible light, often associated with sunlight and used in various applications

ultraviolet, rayonnement ultraviolet

ultraviolet, rayonnement ultraviolet

Ex: Protect your skin from ultraviolet rays by wearing sunscreen. 
fluorescence

the emission of light by a substance that has absorbed light or other electromagnetic radiation

fluorescence, luminescence

fluorescence, luminescence

Ex: Fluorescence is commonly seen in certain minerals that emit a glowing light under ultraviolet (UV) light. 
spectrometer

a scientific instrument used to measure and analyze the properties of light over a specific range of wavelengths

spectromètre

spectromètre

Ex: The scientist used a spectrometer to analyze the composition of the unknown substance based on its light absorption. 
photon
photon
[nom]

a fundamental particle of light that carries electromagnetic energy and exhibits both particle-like and wave-like properties

photon, quantum de lumière

photon, quantum de lumière

Ex: Photons are the quanta of electromagnetic radiation, including visible light, radio waves, and X-rays. 
to refract
to refract
[verbe]

(of physics) to change the direction of light, sound, or energy when it passes through something

réfracter

réfracter

diffraction

the bending, spreading, and interference of waves as they encounter obstacles or pass through narrow openings, often observed in the behavior of light, sound, or other waves

diffraction, diffraction des ondes

diffraction, diffraction des ondes

Ex: Diffraction of light produces patterns of alternating dark and bright regions when it encounters a narrow slit or passes through an obstacle. 
transmittance

the fraction or percentage of light or electromagnetic radiation that passes through a substance or medium

transmittance, transmission

transmittance, transmission

Ex: The transmittance of the glass allowed most of the sunlight to pass through into the room. 
molar absorptivity

a measure of how strongly a substance absorbs light at a particular wavelength

absorptivité molaire, coefficient d'absorption molaire

absorptivité molaire, coefficient d'absorption molaire

absorption spectrum

a range of wavelengths of electromagnetic radiation absorbed by a substance, typically represented as a graph showing absorption intensity versus wavelength

spectre d'absorption, spectre d'absorptivité

spectre d'absorption, spectre d'absorptivité

Ex: Scientists use an absorption spectrum to identify chemical elements and compounds by analyzing the specific wavelengths of light they absorb. 
thermodynamics

the branch of physical science that deals with the relationships between heat, work, and energy, particularly the principles governing the conversion of various forms of energy

thermodynamique

thermodynamique

Ex: The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, only transferred or converted from one form to another. 
thermostat

an instrument that automatically controls the temperature of a room, machine, etc.

thermostat

thermostat

Ex: The thermostat regulates the temperature in the house, ensuring comfort and energy efficiency. 
calorimeter

a device used to measure the heat released or absorbed during a chemical reaction or physical change, typically by measuring temperature changes in a surrounding medium

calorimètre, appareil de mesure de la chaleur

calorimètre, appareil de mesure de la chaleur

Ex: Chemists use a calorimeter to determine the heat of combustion of a substance by measuring the temperature change in water surrounding a reaction vessel. 
thermometer

a tool designed to measure the temperature of the surrounding air or environment

thermomètre

thermomètre

Ex: The meteorologist placed the thermometer in the shaded shelter to get an accurate air temperature reading. 
microchip

a small piece of material that is a semiconductor, used to make an integrated circuit

puce électronique

puce électronique

Ex: The computer’s performance improved after upgrading its microchip. 
wavelength

the distance between a point on a wave of energy and a similar point on the next wave

longueur d'ondes

longueur d'ondes

Ex: In physics, wavelength is the distance between two consecutive peaks (or troughs) of a wave. 
relativity

a theory that explains the relationship between motion, space, and time

relativité

relativité

Ex: Relativity explains why GPS satellites must adjust their clocks for Earth's gravity. 
antimatter

(physics) matter consisting of elementary particles that are the antiparticles of those of regular matter

antimatière

antimatière

Ex: Antimatter is composed of antiparticles, which have the same mass as their corresponding particles but opposite electric charge. 
congelation

the process of solidification or freezing, typically of a liquid or a substance turning into a solid state due to a decrease in temperature

congélation, solidification

congélation, solidification

Ex: The congelation of water into ice occurs when temperatures drop below freezing point. 
to solidify

to transform from a liquid or flexible state into a stable, firm, or compact form

solidifier, se solidifier

solidifier, se solidifier

Ex: As the temperature dropped, the melted wax began to solidify, forming candles with a smooth surface. 
to liquefy
to liquefy
[verbe]

to change from a solid state and become fluid or liquid

se liquéfier

se liquéfier

Ex: As the temperature rose, the snow on the ground started to liquefy. 
subatomic
subatomic
[Adjectif]

relating to particles or forces that exist within atoms, including particles smaller than atoms themselves or the interactions between these particles

subatomique, infra-atomique

subatomique, infra-atomique

Ex: Subatomic particles interact through fundamental forces, such as electromagnetism and the strong and weak nuclear forces. 
neutrino

a very small, electrically neutral particle that rarely interacts with matter

neutrino, particule neutrino

neutrino, particule neutrino

Ex: Neutrinos are subatomic particles with very little mass. 
nanoscale
nanoscale
[Adjectif]

extremely small, typically between 1 and 100 billionths of a meter, where materials show unique properties

nanométrique, à l'échelle nanométrique

nanométrique, à l'échelle nanométrique

Ex: The nanoscale structure of materials can change how they conduct electricity. 
metrology

the scientific study of measurement, including the development of measurement standards and techniques

métrologie, science de la mesure

métrologie, science de la mesure

Ex: Metrology laboratories test and certify measuring instruments. 
biophysicist

a scientist who applies principles and methods of physics to study biological systems and phenomena, aiming to understand life processes at the molecular and cellular levels

biophysicien, scientifique en biophysique

biophysicien, scientifique en biophysique

Ex: The biophysicist used computational modeling to simulate protein folding dynamics in cells. 
diffuse
diffuse
[Adjectif]

describing light that spreads evenly from a broad source or surface, creating soft illumination without harsh shadows

diffus, disperse

diffus, disperse

Ex: The room was softly lit with diffuse light from the ceiling fixture. 
spent fuel

used nuclear fuel that is no longer efficient for producing energy in a reactor

combustible usé, combustible nucléaire usagé

combustible usé, combustible nucléaire usagé

pressure gradient

the rate at which pressure changes over a certain distance in a particular direction

gradient de pression, variation de pression

gradient de pression, variation de pression

wave number

the spatial frequency of a wave, representing the number of wavelengths per unit distance

nombre d'onde, fréquence spatiale

nombre d'onde, fréquence spatiale

Ex: The wave number of a light wave in vacuum is calculated as the inverse of its wavelength. 
boson
boson
[nom]

a tiny particle with whole-number spin, such as photons or the Higgs boson, often associated with carrying fundamental forces or giving mass to other particles

boson, particule de spin entier

boson, particule de spin entier

Ex: Photons, particles of light, are examples of bosons that carry the electromagnetic force. 
collider

a type of particle accelerator where two opposing beams of particles are directed to collide with each other at high speeds, allowing scientists to study fundamental particles and forces

collisionneur, accélérateur de particules à collisions frontales

collisionneur, accélérateur de particules à collisions frontales

Ex: The Large Hadron Collider (LHC) is the world's largest and most powerful collider, used to explore particle physics. 
dipole
dipole
[nom]

a simple type of antenna made of two metal rods, connected in the middle, that is half the wavelength of the signal it transmits or receives

dipôle, antenne dipôle

dipôle, antenne dipôle

Ex: The radio station uses a dipole antenna to broadcast signals over a wide area. 
lepton
lepton
[nom]

a fundamental particle with half-integer spin, including electrons and their heavier counterparts, as well as neutrinos

lepton, particule élémentaire de spin demi-entier

lepton, particule élémentaire de spin demi-entier

Ex: Leptons are elementary particles that include electrons, muons, tau particles, and their associated neutrinos. 
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