| I wonder why the water is warmer in certain parts
of the world.|
This happens because the amount of sunlight and
hence energy from the Sun that reaches the earth's
surface is a function of LATITUDE. Because
of the tilt of the earth's spin axis with respect
to the plane in which the Earth revolves or orbits
the Sun, the CONCENTRATION of sun enegy or
the energy per square meter of land VARIES with
latitude. The low latitudes get more of the
suns energy. This causes unequal heating and
the oceans respond to that.
There are several reasons for this, but the
most important is sunlight. The closer the
sun is to being straight up, the more light you
get, and the more heat you get. At the equator,
the sun is usually straight up or very close,
while at the poles, the sun This is why the
equator is warm and the poles are cold.
Great question! The earth's surface is warmed
by the sun which focuses its energy around Earth's
equator, so land and water near the equator will
be warmest. The interesting thing about the
relationship between the earth and the sun is that
Earth's rotational axis is tilted and wobbles
toward and away from the sun, so sometimes the
North pole is pointed toward the sun, and
sometimes it's pointed away from the sun...this
is why we have seasons!
So, seasonally, when the North pole is pointed
toward the sun, we have Northern Hemisphere
summer, and Southern Hemisphere winter.
The temperature of a body of water can also
change depending on the source of water, the
depth, and other processes. For example, a
high-latitude lake could change temperature wildly
over the course of a year -- it could be frozen in
winter, but warm and swimmable in summer.
Whereas the ocean is so large, the seasonal
temperature range is fairly narrow compared to
lake or river temperature ranges.
The sun is stronger in some parts of the world,
and it heats up the ocean. The warmer ocean
currents are near to the equator and the
colder ocean currents come from the north and
Water (and air) temperature has to do with
the amount of sunlight that certain part of the
world receives. Towards the equator, sunlight hits
the Earth at a ~90 degree angle. On the north and
south poles however, sunlight hits the Earth at a
much smaller angle
see picture . This means that at the
equator, one beam of sunlight is concentrated on a
small area, whereas at the north pole, one beam
covers a much larger area. The equator
therefore receives much more intense sunlight than
the north/south poles, making the water at the
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