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Flashcards in Eclipses and The Moon Deck (14):

What is an annular eclipse?

Eclipse of the sun in which a ring of the Sun remains visible around the Moon.


What is an eclipse?

Blocking of light from one body by another that passes in front of it.


What is the eclipse path?

Narrow path on the Earth?s surface traced by the Moon's shadow during an eclipse.


What is a full moon, and what is the positioning of the Earth and Sun?

Observed once each month, when the Earth lies between the Sun and Moon, and the fully illuminated disk of the Moon can be seen.


What is a gibbous moon?

Phase of the Moon during which more that half of the disk appears illuminated.


What does waning mean?

The lunar phases that follow full moon until a new Moon is reached.


What does waxing mean?

The lunar phases that follow a new Moon until the Full Moon lunar phase is reached.


What is a new moon, and what is the positiong of the Earth and Sun?

Phase of the moon when its motion brings it between the Earth and Sun, and thus appears to us not to be illuminated.


What is the penumbra of an eclipse?

Part of a shadow from which some of the illumination object can still be seen.


What is the terminator line?

Line between bright and dark areas on the Moon or planet, marking the boundary of the area illuminated by the Sun at that time.


What is a total eclipse, and what is the positiong of the Earth and Sun?

Eclipse of the Sun in which the Moon completely hides the solar photosphere, or an eclipse of the Moon in which it passes completely into the umbra behind the Earth.


What is the Umbra?

The central part of a shadow from an eclipse.


What does mare (plural: maria) mean?

(Latin) name applied to areas on the Moon?s surface that seemed sealike when first viewed from Earth through a telescope.


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