Phases And Eclipses Flashcards
- New moon-
the side of the moon facing the Earth
is not illuminated. The moon is up throughout the
day, and down throughout the night. For these
reasons we cannot see the moon during this phase.
- Phases-
the different shapes of the moon you see
from Earth caused by the motions of the moon
around Earth.
- Waxing creasent
during this phase, part of the
moon is beginning to show. This lunar sliver can be
seen each evening for a few minutes just after
sunset. We say that the moon is “waxing” because
each night a little bit more is visible for a little bit
longer.
- First quarter
during first quarter, 1/2 of the
moon is visible for the first half of the evening, and
then goes down, leaving the sky very dark.
- Waxing gibbous
when most of the moon is visible
we say it is a gibbous moon. Observers can see all
but a little sliver of the moon. During this phase,
the moon remains in the sky most of the night.
- Full moon
when we can observe the entire face
of the moon, we call it a full moon. A full moon will
rise just as the evening begins, and will set about
the time morning is ushered in.
- Waning gibbous
like the waxing gibbous moon,
during this phase, we can see all but a sliver of the
moon. The difference is that instead of seeing more
of the moon each night, we begin to see less and
less of the moon each night. This is what the word
“waning” means.
- Third/last quarter
during a last quarter moon we
can see exactly 1/2 of the moon’s lighted surface.
- Waning creasent
during a waning crescent moon,
observers on Earth can only see a small sliver of
the moon, and only just before morning. Each night
less of the moon is visible for less time.
- Eclipse
caused when an object in space comes
between the sun and a third object; it casts a
shadow on that object.
- Solar eclipse
occurs when the moon passes
directly between Earth and the sun, blocking
sunlight from Earth. The moon’s shadow then hits
Earth.
- Lunar eclipse
occurs at a full moon when Earth
is directly between the moon and the sun.