Shared Flashcard Set

Details

first midterm
section 1
25
Astronomy
Undergraduate 1
09/16/2010

Additional Astronomy Flashcards

 


 

Cards

Term
Is the time of solar noon unique to each individual?
Definition
yes
Term
what do the constellations pass through on the celestrial sphere?
Definition
the ecliptic
Term
what does it mean to be in the zodiac constellation of aquarius?
Definition
the sun is postitioned in that constellation
Term
is a psuedoscience a science that is not accepted by the accademic community?
Definition
no it doesnt use the scientific method
Term
is a possible rising time for a waxing crescent 3pm?
Definition
no
Term
list the following from smallest to largest (galaxy, earth, sun, universe)
Definition
earth, sun, galaxy, universe
Term
what moon phases can be seen above the horizon at 9:00 am?
Definition
new moon, third quarter and waning gibous
Term
if at one night yuo see a star rising at 7:36, the next night when would it rise?
Definition
slightly earier
Term
what is the celestrial equator
Definition
always directly overhead at the earths equater
Term
the ecliptic can be descirbed as
Definition
the apparent path of the sun
Term
why is a lunar month longer than a sidereal day?
Definition
Because the Earth is moving in its orbit around the Sun in the same angular direction while the Moon orbits around Earth
Term
it is sunrise on a fishing trip where do you look in the sky to see a crescent moon
Definition
south east
Term
in summer in the northern hemisphere what is the path of the sun
Definition
rises north of east and sets north of west
Term
earths rotationa around its axis causes wat changes in the sky?
Definition
rising and setting
Term
orbital changes what in the sky
Definition
what stars are visible
Term
precession
Definition
causes the north star to shift every 3,000 years
Term
what lattitude is polaris
Definition
equal to the latitude of the observer
Term
why is the celestrial sphere wrong?
Definition
assumes equal distance and that earth is in a fixed position.
Term
consequence of earths tilt (3)
Definition
1. stars path across the sky 2. suns path across the sky 3. variation in the number of daylight hours
Term
more consequnces of earths tilt
Definition
tropical and polar latitudes, precession, equinoxes and solctices
Term
consequences of earths spin
Definition
rising and setting, hourly changes in positions, NCP and SCP,
Term
tropical year is because of which two motions?
Definition
precession and orbit
Term
lunar month/ sidereal month is caused by which two motions?
Definition
rotation and orbit
Term
solar day verse sidrea is caused by which two motions?
Definition
rotaion and orbit
Term
each phase of the moon is visible for how much of the day?
Definition
a portion
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