ESPS Vocab Terms ESPS Semester 1 Vocabulary Need to Know Terms

ESPS Vocab Terms ESPS Semester 1 Vocabulary Need to Know Terms

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Term Definition
Astronomy The study of things in the sky.
Big Bang Theory The explosion that created the universe. Also shows that the universe is expanding.
Blue Shift The shifting in light that shows that everything in space is moving away from the Earth.
Red Shift The shifting in light that shows that planets and galaxies are moving towards the Earth.
Frequency The amount of times something occurs in a set of time.
Wavelength How long waves are on the EM spectrum.
Absolute Brightness The legitimate brightness of a star or object.
Apparent Brightness The brightness that is apparent to our eyes. Non-legitimate brightness amount.
Cosmic Microwave Background The ancient radiation left over from the Big Bang.
Universe The container that holds all of space and time within our own universe. Also is expanding.
Galaxy A massive set of stars/solar systems that contains a black hole at the middle.
Electromagnetic Spectrum The spectrum that all electromagnetic signals and waves exist on.
Astronomic Unit (AU) 149.6 million kilometers is 1 astronomical unit. Used to measure distance in space.
Light Year The amount of time it takes for light to reach a place. 1=nearly 6 trillion miles.
Cosmology The study of the creation and start of space and time and our universe.
Solar System A set of planets orbiting a star.
Star A ball of gas and matter ignited in space. (Also burning)
Stellar Spectra The spectrum of stars based on spectral characteristics.
Planet A ball of mass that orbits a star.
Solar Nebula A massive cloud of gas that made the stars, and planets.
Gas Giant A big planet that has a low density because most of it is gas.
Nuclear Fusion A reaction nuclei form together to create a heaver and bigger nucleus that makes energy.
Main Sequence Stars A group of star types that most stars belong to.
H-R Diagram The Hertzsprung-Russel Diagram is a diagram scientists use to classify stars.
Nebular Something that relates or denotes a nebula and its lifetime.
Red Giant I star that's very bright but has low surface temp.
White Dwarf A small but dense star that is about the size of a planet.
Nova A star the gets very bright very quickly but returns to its natural state over time.
Neutron Star A star that is tiny but super dense and wants to be a black hole but can't.
Pulsar A rapidly rotating neutron star that gives out radio waves super fast.
Black Hole Part of space with gravity so high that no matter or radiation can leave.
Convective Zone The part of the sun where turbulent plasma from the suns core can be seen at the surface of the sun.
Radiative Zone The region of the sun where energy from the suns core is moved towards the outside of the sun.
Photo-sphere Zone The outside layer of the star where light is formed and heat radiates.
Corona The atmosphere of the sun.
Chromosphere The outermost layer of the sun.
Sunspot A spot on the sun made by the suns intense electromagnetic field.
Kepler's 1st law The law that states "the radius vector from the sun to each planet generates equal orbital areas in equal times". (Kepler's Law)
Promincence A eruption from the sun where hot gas is shot out from the outermost layer of the sun.
Eccentricity The amount in which the orbit of a celestial body varies from a perfect circle.
Solar Flare When a release of magnetic energy quickly occurs from the sun usually from a sunspot area.
Elliptical Orbit The orbit that occurs when a small celestial object orbits around a larger celestial object.
Coronal Mass Ejection A large release of plasma and part of the magnetic field from the suns atmosphere.
Formula For Eccentricity Eccentricty = C/A C= Speed of LightA= The axis of something

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