The dark side of the moon
How many days is the lunar cycle
29
Which are the motions of the earth?
Rotation
Revolution
Tilt
Wobble
11.5
difference geographic N. pole vs magnetic N. pole
Imaginary plane that runs through sun equator
Ecliptic plane
Every object attract every other object
Law of universal gravitation
why we can see only one side of the moon
synchronous rotation
What is the effect of the rotation?
day / nights
earth rotation speed
What is the celestial equator
Plane which runs thru the earth equator
First law of motion
every object at rest will stay at rest every object in motion will stay in motion
Phase after full moon
Waning gibbous
What is effect of the tilt (at least 1)
different climate zone
vary amount of daylight / darkness
circumpolar sturs
23.5
tilt angle
where the celestial equator and the elliptic intersect
Autumnal equinox vernal equinox
every object tends to resist change in motion
Inertia
How much is the luminosity of first quarter
50%
Which will be future north star?
Gamma Cephai
about 66600 mph
velocity of revolution of the earth around the sun
where are celestial north pole and ecliptic north pole?
How far apart they are?
Celestial: extension of the earth axis touching the celestial sphere. Ecliptic pole, perpendicular to the ecliptic. they are 23.5 degree apart
More mass, more what?
Inertia
Gravity
Type of solar eclipses
Total (In Umbra path of totality)
Partial (in penumbra)
Annular
Hybrid
what the revolution does? (in addition of overturning dictatorship :))
Seasons
Leap year
2 solstices / 2 equinox
26000 years
time for the earth to wobble
Who is further from the sun (aphelion or perihelion)
aphelion
More distance less what
Gravity