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Earth/Moon

TermDefinition
sphere A round, 3-dimensional object--the shape of planet Earth
axis The imaginary vertical line around which Earth spins
rotation The spinning of Earth on its axis
revolution The Earth's yearly orbit around the Sun
ellipse An elongated, closed curve--Earth's revolution around the Sun
solstice The day when the Sun reaches its greatest distance north or south of the equator
equinox The day when the Sun is directly above Earth’s equator
moon phase The different forms that the Moon takes in its appearance from Earth
new moon Occurs when the Moon is between Earth and the Sun and cannot be seen
waxing More of the Moon is able to be seen each night
full moon Occurs when all of the Moon's surface facing Earth reflects light
waning Less of the Moon is able to be seen each night
gibbous Latin word for "humpbacked"
solar eclipse Occurs when the Moon moves directly between the Sun and Earth and casts its shadow over a part of Earth
lunar eclipse Occurs when Earth's shadow falls on the Moon
maria Dark-colored relatively flat regions of the Moon formed when ancient lava reached the surface and filled in meteor craters
umbra Darkest portion of the Moon's shadow during a total solar eclipse
penumbra Lighter portion of the Moon's shadow during a partial solar eclipse
third quarter waning Moon phase in which only one-half of the lighted side of the Moon can be seen from Earth
Created by: MsHollinger
Popular Earth Science sets

 

 



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