Tides
The rise and fall of the ocean waters is caused by the gravitational pull of the moon.
Gravitational
Pull
Direct High Tides
Low Tides
Spring Tides
Neap Tides
happen when
happen when
happen when
happen when
waters facing the moon are
drawn toward the moon.
waters are drawn away from
the sides of the Earth.
the gravity of the sun and
the moon are pulling
together.
the sun and moon
are at
Indirect
High
Tide
Direct
High
Tide
sun
90 angles
Sun
Earth
Moon
sun
Indirect High Tides
happen when
Water bulging on the opposite
side of the Earth
Tides are
There are
2 high tides
and
2 low tides per day
Moon
strongest and highest
at the
Tides are
new moon
lowest
and
full moon.
http://img.docstoccdn.com/thumb/orig/56224885.png
J. Hoffmann – Notes/ J. Haugh – Visual Notes/ Google Images/ X Drive Earth Science 2012
at the
quarter moon