Astronomy

Created by hermanosal2 

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chapter 1

which of the choices below correctly lists things from largest to smallest

Universe,local group,milky way,solar system

modern scientific theories are NOT

PERFECT

ARISTOTLE'S HYPOTHESIS WAS THAT

ONLY a spherical earth would always cast a circular shadow on the moon

about how many stars are visible on a clear,dark night with the naked eye alone

a few thousand

into how many constellations is the cellestial sphere divided

88

what are constellations

groups of stars making an apparent pattern in the celestial sphere

where on earth would you be if polaris was at your zenith

the north pole

In general what is true of the alpha star in a constellation

it is the brightest star in the constellation

what is the range of values for declination

+90 to -90 degrees

what is the range of values for right ascension

0 to 23 hours

while watching a star,you see it moves 15 degrees across the sky. how long have you been watching it

15 minutes

which statement about declination is FALSE

it is measured eastward in units of time

A star with a right ascesion of 1.0 hours will rise

1.0 hour after the vernal equinox

which statement about right ascemsion is FALSE

it is very similar to latitude on the earth

how long is the precission cycle

26,000 years

the place the sun stops its northward motion along the ecliptic is the

summer solstice

the places where the sun crosses the equator are called the

equinoxes

a year is defined as

the time it takes for earth to complete an orbit around the sun

from a location in the united states, a star is observed to be rising due east. where will this star be located 6 hours later?

high in the southern sky

which statement about the ecliptic is FALSE

the moon can never leave it, but moves twelve times faster than the sun

you note that a particular star is directly overhead. it will be directly overhead again in

23 hours 56 minutes

that polaris will not always be the pole star is due to

precession shifting the celestial pole

what celestial line is a product of the earth's orbit around the sun

ecliptic

if your astrological sing is aries, the sun should be in the constellation aries on your brithday. the dates, according to astrological tradition, during which the sun is in the constellation aries are march 21 to april 20th in which constellation is the sun actually in?

PISCES

where would you be if the sun sets for six months,beginning on september 23rd

north pole

when is the sun located at 6 hours RA, -23.5 degrees declination

sun is never found at this position

where would you be if the sun passes through your zenith on december 21st

tropic of capricorn

when the sun rises it is located in the constellation gemini. when the sun sets later that same day it will be

in the constellation gemini

which statement about the lenght of a day is false

the sideral day includes both the earth's rottion and revolution around the sun

if taurus is now rising at sunset, which constellation rise at sunset next month

gemini

a solar eclipse can only happen during a

new moon

a unar eclipse can only happen during a

full moon

if the moon rose tonight at 6 pm, then tomorrow it will rise about

7pm

if you are in the moon's umbral shadow, then you will witness

a total solar eclipse

which statement about the first quarter moon is false

from th earth, it appears 25% sunlit

if new moon fell in march 2nd, what is the mon's phase on march 14

waxing gibbous

why is there a two day difference in the sidereal and synodic months

the earth is also revolving around the sun so the moon must "catch up"

what conditions are necessary for an annular solar eclipse

new moon on ecliptic apogee

what conditions are necessary for a total solar eclipse

new moon on ecliptic near perigee

driving eastward just before sunrise, if you observe the moon in the eastern sky, its phase must be

waning crescent

when the moon is directly opposite the sun in the sky, its phase is

full

the last quater phase of the moon

crosses the meridian at sunrise

what conditions are necessary for a partial solar eclipse

new moon on eliptic, with us in the penumbral shadow

some type of solar eclipse will happen about

about every six months at new moon

the star WOLF 1061 has a parallax of 2.34 arcseconds, while ROSS 652 has a parallax of 1.70 arcseconds. what can you correctly conclude

WOLF 1061 is closer to earth than ROSS 652

the earth's circumference was first determined by

erastothenes with solstice shadows

which of the following describes parallax

it is inversely propoertional to the distance to the star

a star with a large parallax

is at a short distance from earth

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