Studied by 2 people
bushey
Spectrum
Arrangement of visible light according to wavelength
Sunspot
Dark areas on the surface of the Sun that are cooler than the surrounding area
Solar Flare
Bright areas on the surface of the Sun that are violent eruptions of particles which increase the intensity of the solar wind
Prominence
An arc of gases looping out from the surface of the Sun
Solar Wind
Flow of charged particles moving from the Sun throughout the entire Solar System
wavelength
Horizontal distance between successive peaks or troughs
Electromagnetic spectrum
Classification of the many types of radiation based on wavelength and frequency
Nuclear fusion
Process of hydrogen atoms joining together to form helium atoms releasing large amounts of energy
Nuclear Fission
Processes of atoms of heavy elements such as Uranium splitting apart to form atoms of lighter elements
sun
Closest star to Earth
Light Year
Distance light travels in one year
star
Glowing hot ball of gases in space fueled by nuclear fusion
Revolution
Process of an object moving around another object; process of orbiting
Doppler Effect
Apparent change in the wavelength and frequency of energy waves that are emitted from an object moving toward or away from the observer
Aurora
Shimmering light in night sky caused by solar radiation exciting molecules in the atmosphere
Neutron star
Massive and dense remaining core of a supernova
Binary stars
A pair of stars that orbit their center of mass
Luminosity
The amount of light emitted by an object per second
Nuclear fusion
Process of lighter atoms joining together to form heavier atoms releasing large amounts of energy, most commonly hydrogen forming helium
Cosmic Background Radiation
Energy thought to be left over from the original expansion of the universe approximately 13 billion years ago
Galaxy
Large group of stars and nebulae held together by gravity
protostar
Recently condensed nebula that will form a star as it continues to contract and increase in temperature
Big Bang
Theory explaining the formation of the universe in a sudden and rapid expansion of all matter and energy from a single point of extremely high temperature and density about 13 billion years ago
parallax
Apparent shift in position of a stationary object as seen by an observer from two different locations
A light year
Distance light travels in one year
Absolute Magnitude
How bright a star would be at the same given distance
Apparent Magnitude
How bright a star appears from Earth
Consolation
Groups of bright stars in the night sky that reminded ancient peoples of animals, common objects or mythological characters
Nebula
Cloud of gas and dust in space
Supernova
Brilliant explosion caused when a massive star implodes
Black Hole
Extremely massive and dense remaining core of a supernova whose gravity is so strong even light can not escape
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Flashcard (95)