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Astronomy 1

Unit 2 vocab

TermDefinition
Astronomy study of space
Geocentric representing Earth as a center
Heliocentric representing the sun as a center
Ellipse describes Earth's yearlong orbit around the sun
Astronomical Unit Earth's distance from the sun
Rotation the length of a day on a planet
Revolution the length of a year on a planet
Perihelion where a planet is at its closest point to the sun
Phases of the Moon what the moon looks like from the side we can see
Solar Eclipse when the moon is directly in front of the sun
Lunar Eclipse when Earth is between the sun and the moon
Terrestrial Planet pertaining to Earth
Jovain Planet pertaining to Jupiter
Asteroid a piece of rock or metal, usually found orbiting the sun between Mars and Jupiter
Comet space object of dust and rock particles
Meteoroid large pieces of dust and rock
Meteor a meteoroid that burns upon entry into Earth's atmosphere
Meteroite a meteoroid that hits a moon or planet
Electromagnetic Spectrum arrangement of electromagnetic waves
Photon quantum of electromagnetic radiation
Doppler Effect shift in frequency of electromagnetic radiation
Refracting Telescope optical telescope using a double convex lens
Reflecting Telescope optical telescope that uses a concave mirror
Radio Telescope type of telescope that collects and records radio waves
Hubble Telescope telescope launched into orbit in 1990
Space Shuttle reusable spacecraft for space transportation
Created by: 3083436
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