ocean motion ocean motion!. waves the up and down movement of surface water. waves are really...
TRANSCRIPT
Ocean Motion
OCEAN MOTION!
Waves
Waves The up and down movement of surface water.
Waves are really energy!
Water moves in a circular motion, while the energy moves forward!
What makes a wave?
Most waves are caused by wind and can grow in size according to: 1. Speed of wind2. How long the wind blows3. How far (distance) the wind blows
Parts of a Wave
Tsunamis Giant waves caused by earthquakes and volcanoes
Storm Surge Large domes of water caused by low air pressure during hurricanes
and tropical storms.
Rogue WavesHuge wave formed by large storm
waves joining together
Streams of water that flow like rivers through the ocean.Unlike waves, currents do move water forward!Caused by wind patterns and different water densities.
Oceanshave warm
and coldcurrents.
There are 7 majorocean
currents
These currents help
determine weather &
climatepatterns
The Gulf Stream –a well known Surface Current!Part of a large current that carries warm water up the Southeastern coast of
America as well as over to Western Europe.
Types of CurrentsSurface Current: Flow across surface of ocean
Caused by prevailing winds (Gulfstream)
Shoreline Currents: local currents that run along the shorecaused and changed by winds and shifting sand
Longshore Current: type of shoreline current that carries large amounts of beach material from one place to another.
Rip Current: shoreline current that flows away from beach (very dangerous to swimmers!)
Deep Ocean Currents – caused by differences in water temperature. Cold water is heavier than warm water so it sinks.
Currents do not move in a straight linebecause Earth’s rotation causes them to bend.
Currents in Northern Hemisphere flow clockwise
Currents in Southern Hemisphere flow counter-clockwise
TIDES
Tides The daily rise and fall of the level of the ocean. Caused by the pull of gravity from the sun and
moon.
The bulges of water on either side of the earthare called HIGH TIDESThe low-water levelsare called LOW TIDES.
And now….for some ocean humor!