Where are the
Oceans?
Identify the Oceans
Tides
Waves
Currents
Ocean Storms
The Ocean
Floor
PREDICT: What percent of the earth is
covered in water? What percent is land?
Explain your prediction.
PREDICT:What percent of the earth’s
water is salt? What percent is fresh?
Explain your prediction.
World Ocean Facts
Atlantic
Ocean
Pacific
Ocean
Indian
Ocean
Arctic
Ocean
Area
(1,000,000
km²)
Volume
(1,000,000
km³)
Average
Depth
(m)
Maximum
Depth
(m)
82.4
323.6
3926
9200
165.2
707.6
4282
11,022
73.4
291.0
3963
7460
14.1
17.0
1205
4300
Arctic Ocean
Pacific Ocean
Atlantic
Ocean
Indian
Ocean
On your map, color the warm currents red and
the cold currents blue. Label the 4 oceans.
Making Currents
What causes tides?
The gravitational forces of the moon and sun on
the water causes the tides..
The moon, being nearest, has the greatest
effect even though the sun is the larger of
the two.
High tides are generated on the sides of
the Earth nearest to and farthest from the
moon
During new and
full moon phases
the moon, sun,
and Earth are
aligned causing a
greater
gravitational pull
on the Earth.
This results in
higher high
tides and lower
low tides.
How are Tides
Predicted?
•Still-Water Line - The level of the ocean if it were flat
without any waves.
Crest - The highest part of the wave above the stillwater line.
Trough - The lowest part of the wave below the stillwater line
•Wave Height - The vertical distance between the
crest and the trough.
•Wavelength - The horizontal distance between
each crest or each trough.
•Wave Period - The time it takes for two successive
waves to pass a particular point. For example, it you are
standing on a pier and start a stopwatch as the crest of a
wave passes and then stop the stopwatch as the crest of
the next wave passes, you have measured the wave period.
Wave Frequency - The number of waves that
pass a particular point in a given time period.
Amplitude - The amplitude is equal to one-half the wave
height or the distance from either the crest or the trough to the
still-water line.
What Makes A Wave?
Let’s Make A Wave
Hurricane
Tsunami
Ocean Storms
Typhoon
El Nino
Cyclone
Neptune’s Web
Ocean Weather, Temperature, and
Tides
Ocean Planet Exhibit in the Smithsonian
Museum of Natural History
Secrets at Sea Game