Transcript 1000

Phases of
the Moon
Reasons
for the
Seasons
Constellations
Eclipses
Celestial
Sphere
Using terms
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Full moon
Which phase appears as the
moon completely lit overhead
at midnight
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6 pm
If the moon rose tonight at 5
pm, about what time will it
rise tomorrow
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Full moon
a lunar eclipse occurs only
during a
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The Earth is also revolving around the Sun,
so the Moon must catch up
Why is there a difference
between the sidereal and lunar
months?
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The phase will be full because it is rising
opposite the sun. If the moon is directly
opposite of the sun in the sky it will be a
full moon
If the moon rises at sunset, what
phase will it be in? Why?
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23.5 degrees
What is the tilt of the earth on
its axis?
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year
The time it takes for Earth to
complete an orbit around the
Sun is called.
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equinoxes
The places where the Sun
crosses the equator are called
the
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Summer solstice
The sun is high overhead at
23.5 degrees north.
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Check your answer with me
Draw the reasons for the
seasons showing equinoxes
and solstices
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constellations
Groups of stars making an
apparent pattern in the
celestial sphere are called
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Brightest star
In general, what is true of the
alpha star in a constellation
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About 3000
About how many stars are
visible on a clear, dark night
with the naked eye alone?
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Taurus
If the sun rises in the
constellation of Taurus which
constellation will it set in?
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88
Into how many constellations
is the celestial sphere divided
by the IAU?
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New moon.
A solar eclipse can only happen
during a
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Total eclipse of the sun
If you are in the Moon’s
umbral shadow, then you
will witness
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New moon on ecliptic at apogee
What conditions are necessary
for an annular solar eclipse?
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New moon on the ecliptic at perigee
What conditions are necessary for a total solar
eclipse?
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Show your visual representation
Draw a solar eclipse showing
the penumbra and umbra of
the moon’s shadow on earth
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North pole
Where on Earth would you be
if Polaris was at your zenith?
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ecliptic
What celestial line is a
product of the Earth’s orbit
around the Sun?
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23 hours and 56 minutes
You note that a particular star
is directly overhead. It will
be directly overhead again in
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0 hours to 23 hours
What is the range of values
for Right Ascension
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47 degrees
If Seattle is at 47 degrees
north latitude on earth where
is Polaris in the sky
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Northstar
Of all the visible objects in
the sky, which appears to
move the least?
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Shorter distance
Is a star with a large parallax
and great distance or short
distance from earth
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Precession
The fact that Polaris will not
always be the North Star is
due to what Earth motion?
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26,000 years
How long is the precession
cycle
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He realized that the sun was directly overhead
in one city and at a slight angle in another at
the same time and therefore realized the Earth
was curved. He realized the distance between
the cities was a 7 degree difference or about
1/50th of the earth’s total conference
Explain how Eratosthenes
measure the circumference of
our planet