Geocentric model is the earth is the center of the universe and is theory of Ptolemy. Heliocentric model is sun is the center of the universe and is theory of Nicolous Copernicus. Sun is the center of the universe it's start movement and seasons show the truth. Equator is like divides the earth. There is two Hemisphere North and South Hemisphere. North Hemisphere is winter, less sunlight. South Hemisphere is summer, more sunlight. Season causes tilt and revolution. Tides is when the ocean moving high and low. Vernal/ Spring Equinox in March 21/22. Indirect is less sunlight, Direct is more sunlight Earth's axis is a imaginary line in the central of Earth. Time zone in the world is 24. International Date Line is the changing the calender days. Greenwich Mean Time is the town where time begins. Revolution is Earth is Orbit. Orbit is a Earth Revolution process the curved path.Shape of the Earth's orbit is Ellipse. Aphelion is far. Perihelion is near. There is for season Spring, Summer,Winter, and Fall. Winter Solstice is less sunlight in the winter. Summer Solstice is more sunlight. Equinox is a when Earth receive the same amount of sunlight.Phases of the Moon is a when the moon different forms that the moon takes in it's apperence from Earth.Moon get light from the Sun.Waxing is moon gets bigger. Wanning is a moon gets smaller. Lunar Eclipse is when the moon behind the Earth into the shadow.Phases of the moon is a lunar eclipse is Full moon. Total whole moon is dark. Partial aside of the moon is dark. Solar Eclipse is when moon is between Earth and Sun. Phases of the moon is a solar eclipse is New moon. Spring Tide is that is higher or lower than normal tides. Phases of the moon are Spring Tide is New moon and Full moon. Neap tide is Sun, Earth, and Moon goes and look like L also right triangle. Phases of the moon are Neap tide is Third and First Moon
