ch 27 vocab

electromagnetic spectrum
all types of electormagnetic radiation arranged according to wavelength and frequency
interferometry
process by which preipitaion that has fallen on land surfaces enters the ground and becomes groundwater
reflecting telescope
refracting telescope
telescope that uses lenses to focus visible light
albedo
prercentage 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
highland
light colored mountainous heavily cratered area of the moon composed mostly of lunar breccias
impact crater
crater formed when space material impacted on moon’s surface
maria
dark colored smooth plains on the moon surface
ray
long trail of ejecta that radiates outward from a moon crater
regolith
layer of loose ground up rock on the lunar surface
rille
valleylike structure that meanders across some regions of the moon’s maria
apogee
farthest point in the moon’s elliptical orbit to earth
ecliptic plane
plane of earth’s orbit around the sun
equinox
time of year during which earth’s axis is at a 90 angle to to the both hemisphere receive exactly 12 hours of sunlight and the sun is directly overhead at the equator
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
perigee
closest point in the moon’s elliptical orbit to earth
solar eclipse
when the moon passes between earth and the sun and the moon casts a shadow on earth blocking earth’s blocking earth’s view of the sun can be partial or total
soltice
period when the sun is overhead at its farthest distance either north or south of the equator
synchronous rotation
the state at which the moon’s orbital and rotational periods are equal
antagonism
the state of being opposed or hostile to another
ardent
warm or intense in feeling passionate
arid
having little or no rainfall very dry
assuage
to make less burdensome or less painful