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ES. Ch27 Vocab.

TermDefinition
electromagnetic spectrum includes visible light, infrared and ultraviolet radiation, radio waves, microwaves, X rays, and gamma rays
refracting telescope uses lenses to focus visible
reflecting telescope use mirrors to focus visible light
interferometry is a process that links separate telescopes so they act as one telescope
albedo percentage of sunlight that is reflected by the surface of a planet or a satellite, such as the moon
highland light-colored, mountainous, heavily cratered area of the moon, composed mostly of lunar breccias
impact crater a crater on a planet or moon caused by the impact of a meteorite or other object, typically circular with a raised rim.
ejecta material that is forced or thrown out, especially as a result of volcanic eruption, meteoritic impact, or stellar explosion.
ray long trail of ejecta that radiates outward from a Moon 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 either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days.
equinox time of year during which Earth's axis does not point directly toward the Sun; both hemispheres receive exactly 12 hours of sunlight and the Sun is directly overhead at the equator
synchronous rotation he state at which the Moon's orbital and rotational periods are equal.
solar eclipse an eclipse in which the sun is obscured by the moon.
perigee is the closest point to the earth and it is in this stage that the moon appears larger. looking at the moon in the sky without anything to compare it to, you wouldn't notice any size difference.
apogee farthest point in the moon's elliptical orbit to earth
lunar eclipse when earth passes between the sun and the moon, and earth's shadow falls on the moon; occurs only during a full moon
Created by: selenamercado
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