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Chapter 27 vocab

TermDefinition
Electromagnetic Spectrum All types of electromagnetic radiation arranged according to wave length and frequency
Refracting Telescope Telescope that uses lenses to focus visible light.
Reflecting Telescope Telescope that uses mirrors to focuse visible light.
Interferometry Process that links separate telescopes so the act as one telescope, producing more detalied images as the distance bewteen them increases.
Albedo Percentage of sunlight that is reflectef by the surface of a plant or a satellite, such as the moon.
Highlands Light-colored, mountains, heavily cratered area of the moon, composed mostly of lunar breccias.
Maria Drak-colored, smooth plains on the moon's surface.
Impact Crater Crater formed when space material crashes into the surface of a celestial body.
Ejecta Material that falls back to the lunar surface after being blasted out by the impacted of a space object.
Ray Long trail ofejecta that radiates out ward from animpact crater.
Rille Valley like structure that meanders across some regions of the moon's maria.
Regolith Layer of loose, ground-up rock on the lunar surface.
Ecliptic Plane Plane of earth's orbit around the sun.
Solstice Period when the sun is over heasd at its farthest distance either nouth or south of the equator.
Equinox Time of year during which Earth's axis is at 90 degress angle to the sun; both hemisphers receive exactly 12 hours of sunlight and the sun is directly over head of the equator.
Synchrinous Rotation The state at which an orbiting body's orbital and rotational periods are equal.
Solar Eclipse When the moon passes bewteen earth and the sun and the moon casts a shadow an earth, blocking earth's view of the sun; can be partial or total.
Perigee Closest point in the moon's elliptical orbit to earth.
Apogee Farthest point in an object's orbit to earth.
Lunar Eclipse When the earth passes bewteen the sun and the moon, and earth's shadow falls on the moon; occurs only during a full moon.
Created by: galavizr
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