22 terms

Glencoe Earth Science, Chapter 28

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interferometry
Process that links separate telescopes so they act as one telescope, producing more detailed images as the distance between them increases.
reflecting telescope
a type of telescope that uses mirrors to focus visible light.
refracting telescope
a type of telescope that uses lenses to focus visible light.
spinoff
NASA technology that has been passed to commercial industries for common use.
albedo
amount of sunlight that is reflected by the surface of a planet or a satellite, such as the Moon.
ejecta
Material that falls back to the lunar surface after being blasted out by the impact of a space object.
highlands
Light-colored, mountainous, heavily cratered areas of the Moon, composed mostly of lunar breccias.
impact crater
Moon crater formed when space material impacted on the lunar surface.
mare
dark-colored, basaltic, smooth plain on the Moon, between 3.1 and 3.8 billion years old, that formed from lava welling up and filling in large impact basins.
ray
long trail of ejecta that radiates outward from a Moon crater.
regolith
Layer of loose, ground-up rock on the lunar surface.
rille
Valley like structure that meanders across some regions of the Moon's maria.
apogee
Farthest point in the Moon's elliptical orbit to Earth.
autumnal equinox
Occurs when the Sun is directly overhead at the equator and results in day and night of equal length for both northern and southern hemisphere
ecliptic
Plane that contains Earth's orbit around the Sun
lunar eclipse
Occurs only during a full moon, when Earth passes between the Sun and the Moon, and Earth's shadow falls on the Moon.
perigee
closest point in the Moon's elliptical orbit to Earth.
solar eclipse
occurs when the Moon passes between Earth and the Sun and the Moon casts a shadow on Earth, blocking Earth's view of the Sun; can be partial or total.
summer solstice
occurs when the Sun is directly overhead at 23.5 degrees north latitude, around June 21, and results in the maximum number of daylight hours for the northern hemisphere and the minimum number for the southern hemisphere.
synchronous rotation
describes the state at which the Moon's orbital and rotational periods are equal.
vernal equinox
occurs when the Sun is directly overhead at the equator and results in day and night of equal length for both northern and southern hemispheres.
winter solstice
occurs when the Sun is directly overhead at 23.5 degrees south latitude, around December 21, and results in the minimum number of daylight hours for the northern hemisphere and the maximum number of the southern hemisphere.