Seasons Flashcards
Winter
solstice,Dec 21,9 day 15 night(sunlight on southern hemi)
Spring
equinox,mar 21,12 day 12 night(sunlight hits equator)
Summer
solistice,Jun 21,15 day 9 night(sunlight hits north hemi)
Autumal
equinox,sep 23,12 day 12 night(sunlight hits equator)
astronomy
study of our solar system,universe,stars,planets
,moons
Geocentric
earth in the center of the earth THS IS NOTTT TRUE
Helicentric
the sun is in the center
THIS IS TRUEEE
Rotation
the earth spinning on its axis
how long is one rotation?
24hrs or 1 day
What can rotation cause?
day and night,sun appearing to rise in east and set in west
Earth always rotates
clockwise
proof of rotation
pendulum,star trails pic with a time lapsed photo,winds,curving,coriolis effect
Revolution
the earth moving around the sun
How long is 1 revolution?
365 1/4 days or 1 year
What does revolution cause?
seasons
Earth’s what never changes?
its tilt
what are some examples of revolution?
moon orbiting around earth
proof of revolution
constellation(star arrangements in pics,different arrangements visible at certain times of the year)
rotation sum
1 day(24hrs),day and night,sunrise/sunset
revolution sum
1 year(365.25 days),constellations,seasons with tilt
