Transcript Earth, Sun, and Moon

Earth, Sun, and Moon
Carin Miranda
Smyrna Middle
Spring 2010
Days and Night
• The celestial body around which Earth
rotates and revolves is the SUN
• The time required for Earth to rotate
once on its axis is called a day.
• Earth’s rotation is a direct cause of
daylight and night.
Seasons
• Seasons are caused mainly by the 23.5
degree tilt of Earth’s axis.
• December 22 marks the beginning of
winter in the Northern Hemisphere.
• Winter in the Southern hemisphere is
caused by the South Pole tilting away
from the sun.
Seasons
Phases of the Moon
• Phases are the different appearances of the
moon due to its changing position.
• Caused by the relative positions of the moon,
Earth, and the sun.
• When the sunlight part of the moon we see
from Earth appears to get larger it is called
waxing.
• When the sunlight part of the moon we see
from Earth appears to get smaller it is
waning.
Eclipses
• Eclipses are when the shadow of one
celestial body falls on another.
• Doesn't happen every month because
the moon’s orbit is tilted.
Solar Eclipses
• During a total solar eclipse the moon
appears to fully cover the disk of the
sun.
• Happens when the moon is between
the Earth and the sun.
Lunar Eclipses
Solar Eclipse
Tides
• The force that pulls tides is gravity.
• The main source of gravity for tides is
the moon.
• High tide is the bulge that takes place
on parts of the Earth facing or opposite
the moon.
Neap Tide
• When the Earth, moon, and sun form a
ninety degree angle.
Spring Tide
• When the Earth, moon, and sun form a
straight line.