The effect of the slowing of a tsunami close to shore is that the wave increases in height. It becomes a lot taller! The trick to getting this in perspective is in understanding that as the wave travels across the water, it stretches out. As it is now longer while en route across the open ocean, it isn't as tall. In fact, it is possible to be on a ship in the middle of a deep ocean as a tsunami passes and not really notice anything alarming because the wave is so elongated. As it reaches shore, the leading edge of the wave begins to slow up in the shallower water. This results in a "bunching up" of the water and the wave can then rise to a frightening - and destructive - height just as it comes ashore.
Note: To expand a little: Ordinary ocean waves are movements only of the top layers of water, and if you were diving a few meters below the surface, you would not feel the effects of even rather strong waves. Tsunamis, however, involve the movement of truly huge amounts of water amounting to the entire "column" of water from the ocean floor to the surface. This is another way to see why the above explanation increases tsunami height. We're not talking about bigger and bigger "Surfing" waves, but a huge volume of water crowding up on itself as it moves over the rising ocean floor.
What happens to the approaching waves front as they enter the opening of the barrier?
When the waves approach the shore, they touch the bottom. The base of the wave is slowed down. They break apart as they hit the shore line.
the wave stops because it doesn't have enough water with it to form a wave lager again from the shoreline
The speed and length of the wave diminish and the wave grows higher.
the wavelength decreases
it speeds up.
The pressure eases down
The distance between crests decreases
they get shorter
the water becoming gradually more shallow..
nearly parallel to the shoreline
When waves hit the shore it transfers energy.
The reason they change direction near shore is because the density of objects increase!
No
they get shorter
it keeps on slowing down and hitsthe shore.
no
the water becoming gradually more shallow..
nearly parallel to the shoreline
nearly parallel to the shoreline
Waves constantly change the look of the shore, but you can stop the waves from moving the sand by creating a rock wall, however this will effect the shore furthur up
The waves begin to interact with the ocean floor. The same mass of water runs into shallower and shallower water making the height of the wave increase.
The waves pounding against the shoreline. The waves colliding with the shore. The waves breaking upon the beach.
Waves hit the shore many times per minute, but it varies so greatly. The wind changing can result in a change of this number. Any storms out in the ocean can change it as well.
Waves even out a shoreline by eroding it.The waves coming to shore gradually change direction, as different parts of the wave begins to drag the bottom.The energy of the wave is concentrated on headlands, part of the shore that sticks out into the ocean.As waves erode the headlands the shoreline will eventually even out.Tee Hee!!!!!!!!!!!!!!!!!!!!!!!! ___------ -/---- ----\/--- --- \------------ ---- --