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Topic 11

Satellite An object that orbits a planet
Star giant balls of hot gas made of hydrogen & helium
Constellation pattern or group of stars that people-thought represents, animal orobject.
Geocentric Earth is at the center of the revolving planets & stars
Heliocentric Earth and other planets revolve around the sun.
Ellipse An oval shape which may be elongated or nearly circular, the shape of the planet orbits
Rotation spinning of Earth on its axis
Revolution Movement of one object around another
Solstice sun appears farthest north of equator once a year
Equinox noon sun is directly overhead at equator, rises due east and sets due west.... Means “equalnight”
Gravity force which attracts all objects to ward each other
Law of universal gravitation every object in universe attracts another object.
Inertia when object resists change in motion
Eclipse The partial or total blocking of one object in space by another
Umbra The darkest part of the shadow
Penumbra eclipse shadow that is dark, but not as dark as the umbra portion
Tide rise & fall of the ocean water that occur every 12.5 hrs.
Spring tide largest difference between high & low tide
Neap tide Sun--- Moon---- Earth (all in a row-during new moon & full moon tide
Created by: AS5849