test 1 Flashcards by Madeline Gager | Brainscape

Q

ly distance

A

1x10¹³km

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Q

au distance

A

1.5x10⁸km

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Q

parsec distance

A

3.26 ly

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Q

average distance from earth to sun in km, name

A

93M, au

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Q

solar day

A

time by actual position of the sun

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Q

sidereal day

A

time by the stars

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Q

sidereal month

A

27.3 days, true rotational period

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Q

synodic month

A

29.5 days new moon to new moon

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Q

which way does moon revolve around earth

A

counter

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Q

which way is earth revolving around the sun

A

counter

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Q

three types of solar eclipses

A

total, partial, annular

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Q

phase of moon in solar eclipse

A

new

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Q

apogee

A

farther away

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Q

perigee

A

closer

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Q

ra Dec Vernal equinox

A

0° 0h

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Q

ra Dec summer solstice

A

22.5°+ 6h

Q

ra Dec autumnal equinox

A

0° 12h

Q

ra Dec winter solstice

A

23.5°- 18h

Q

what time is the new moon

A

12pm

Q

what time is waning crescent

A

9am

Q

what time is waning quarter

A

6am

Q

time of waning gibbous

A

3am

Q

what time is full moon

A

12am

Q

time is waxing gibbous

A

9pm

Q

what time is waxing quarter

A

6pm

Q

what time is waxing crescent

A

3pm

Q

best type of lights for outdoors and why

A

low pressure sodium, more wattage and less light blockage

Q

ways to light more effectively outdoors

A

moving detected, low pressure sodium, covered

Q

diurnal motion and cause

A

the motion of the stars in the sky, earth’s rotation

Q

where is the astronomical meridian

A

divides the sky between e and w

Q

moon phase during lunar eclipse

A

full

Q

what causes precession, how long is one cycle

A

sun and moon gravity, 26k

Q

how long is on moon rotation

A

27.5 days

Q

describe milky ways size and shape

A

100k ly, disk w ball in the center, spiral