Here is my final version of what are the signs of an approaching tsunami
There are many signs of an approaching tsunami to warn you. The first is that you should recognize the original cause of the tsunami. If there is an earthquake in the ocean then straight away you should know that there is a chance a tsunami is coming. It is easy to recognize an earthquake because you can feel the ground shake.
If there is a land volcanic eruption you will be able to see the smoke and feel the ground shake and then you should know that a tsunami is coming. A underwater volcanic eruption is harder to recognize because there is no smoke but you can still feel the ground shake.
If a meteorite lands in the ocean you may be able to recognize it because of roaring through the sky and the smashing of it into the water.
The main sign of an approaching tsunami is water rushing away from the shore. When a tsunami is approaching the waves suck all the water away from the shore to gain height and power. The water looks like it is retreating to the horizon. From the time the water is sucked away to the time it hits the shore is a few minutes.
Saturday, September 29, 2007
Friday, September 28, 2007
How does a meteorite cause a tsunami?
Here is my final verison of how does a meteorite cause a tsunami?
A meteorite can easily cause a tsunami of it lands in an ocean. If a meteorite lands in the ocean is will first off all turn water around it to steam because of how hot it is and secondly make tsunami waves rush from where the meteorite hit.
A meteorite landing in the ocean acts exactly like a stone being dropped into water. The meteorite hits the water with tremendous force and takes up the place where the water previously was. This then makes the water rush away and produce tsunami waves.
There have been over 200 meteorites that have impacted the Earth in the earth’s history. The biggest one is believed to be that meteorite that hit the earth and had a part in killing the dinosaurs.
Meteorites hitting the earth are extremely dangerous because of how big the tsunamis can be. If a meteorite ten kilometres wide crashed into the sea, it would produce waves up to three kilometres high and would flood nearby continents.
A meteorite can easily cause a tsunami of it lands in an ocean. If a meteorite lands in the ocean is will first off all turn water around it to steam because of how hot it is and secondly make tsunami waves rush from where the meteorite hit.
A meteorite landing in the ocean acts exactly like a stone being dropped into water. The meteorite hits the water with tremendous force and takes up the place where the water previously was. This then makes the water rush away and produce tsunami waves.
There have been over 200 meteorites that have impacted the Earth in the earth’s history. The biggest one is believed to be that meteorite that hit the earth and had a part in killing the dinosaurs.
Meteorites hitting the earth are extremely dangerous because of how big the tsunamis can be. If a meteorite ten kilometres wide crashed into the sea, it would produce waves up to three kilometres high and would flood nearby continents.
How does a volcanic eruption cause a tsunami?
Here is my final version of how does a volcanic eruption cause a tsunami?
A volcanic eruption can cause a tsunami is a few different ways. The two types of eruptions are a normal volcanic eruption and the other is an underwater volcanic eruption.
A normal volcanic eruption or a land eruption is less likely to cause a tsunami because when it erupts there is no water above it to make a tsunami. A land eruption can cause a tsunami in three ways. The first is when the volcano erupts the original explosion and shaking can disturb the water and cause waves. The second is when the volcano erupts and all the hot lava and ash slides down the mountain side and can cause a landslide made of land and lava. The land then falls into the water and makes tsunami waves. The third way is that the eruption from volcano can cause some seismic activity which can be an earthquake. If these three combine it can crate a huge tsunami with massive power.
An underwater volcanic eruption is more likely to cause a tsunami because when it erupts there is water above it. An underwater volcanic eruption can create an earthquake, landslide and tsunami waves just like a normal volcanic eruption. The thing that makes an underwater volcanic eruption so dangerous is that when it erupts, the lava and power from the explosion pushes up and makes the water go sideways resulting in large waves.
Volcanic eruptions cause 4.6% of tsunamis, 9.1% of tsunami deaths and have killed 41,002 people. The two major volcanic generated tsunamis have been the Krakatau eruption in August 1883 which killed 36,000 people and Japanese Unzen eruption in May 1792 which killed 4,300 people.
A volcanic eruption can cause a tsunami is a few different ways. The two types of eruptions are a normal volcanic eruption and the other is an underwater volcanic eruption.
A normal volcanic eruption or a land eruption is less likely to cause a tsunami because when it erupts there is no water above it to make a tsunami. A land eruption can cause a tsunami in three ways. The first is when the volcano erupts the original explosion and shaking can disturb the water and cause waves. The second is when the volcano erupts and all the hot lava and ash slides down the mountain side and can cause a landslide made of land and lava. The land then falls into the water and makes tsunami waves. The third way is that the eruption from volcano can cause some seismic activity which can be an earthquake. If these three combine it can crate a huge tsunami with massive power.
An underwater volcanic eruption is more likely to cause a tsunami because when it erupts there is water above it. An underwater volcanic eruption can create an earthquake, landslide and tsunami waves just like a normal volcanic eruption. The thing that makes an underwater volcanic eruption so dangerous is that when it erupts, the lava and power from the explosion pushes up and makes the water go sideways resulting in large waves.
Volcanic eruptions cause 4.6% of tsunamis, 9.1% of tsunami deaths and have killed 41,002 people. The two major volcanic generated tsunamis have been the Krakatau eruption in August 1883 which killed 36,000 people and Japanese Unzen eruption in May 1792 which killed 4,300 people.
How does a landslide cause a tsunami?
Here is my final version of how does a landslide cause a tsunami?
Landslides that cause tsunamis are called submarine landslides because these landslides take place underwater.
Submarine landslides usually happen in a continental shelf or an underwater trench. Landslides happen here because these areas have large slopes. These areas can have slumping rock, unconsolidated sediment, or weaknesses in the rock areas. Most landslides occur from earthquakes which cause a landslide.
Submarine landslides happen when there is a great mass of land underwater that slides or gets displaced from its original position and falls onto the seabed. The land mass then takes up the space that the water previously had which makes the water rise and make waves.
The size of the waves depends upon the volume of the material moved, the depth pf the submergence and the speed of the landslide. The speed of the landslide depends on how the landslide occurred. Earthquake caused landslides travel very fast because it is a quick break away from the original land mass. Landslides they happen from gradual breakaway travel slower because it is a very slow breakaway.
Landslides that cause tsunamis are called submarine landslides because these landslides take place underwater.
Submarine landslides usually happen in a continental shelf or an underwater trench. Landslides happen here because these areas have large slopes. These areas can have slumping rock, unconsolidated sediment, or weaknesses in the rock areas. Most landslides occur from earthquakes which cause a landslide.
Submarine landslides happen when there is a great mass of land underwater that slides or gets displaced from its original position and falls onto the seabed. The land mass then takes up the space that the water previously had which makes the water rise and make waves.
The size of the waves depends upon the volume of the material moved, the depth pf the submergence and the speed of the landslide. The speed of the landslide depends on how the landslide occurred. Earthquake caused landslides travel very fast because it is a quick break away from the original land mass. Landslides they happen from gradual breakaway travel slower because it is a very slow breakaway.
How does an earthquake cause a tsunami?
Here is my final version of how does an earthquake cause a tsunami?
A tsunami can happen when one tectonic plate is forced underneath another on the seabed. This movement is slow and gradual and can go on for centuries. Eventually the strain on the upper plate becomes too much and it lurches violently upwards causing an earthquake. The vast amount of water pushed upwards by the earthquake can create a tsunami.
Tectonic plates make up the earth’s surface. They rest on a vast layer of hot rock called the mantle. These plates are moving slowly at all times. Where the edges meet they either slide past each other, scrape together or crash head on. The area where the plates meet is called a fault line.
Earthquakes are measured on the Richter Scale. The higher the reading on the scale, the larger the earthquake and larger the tsunami. The same is when it is a low reading on the Richter Scale.
Seismic activity is the most common cause of tsunamis. Over the past two millenniums earthquakes have produced 82.3% of all tsunamis.
A tsunami can happen when one tectonic plate is forced underneath another on the seabed. This movement is slow and gradual and can go on for centuries. Eventually the strain on the upper plate becomes too much and it lurches violently upwards causing an earthquake. The vast amount of water pushed upwards by the earthquake can create a tsunami.
Tectonic plates make up the earth’s surface. They rest on a vast layer of hot rock called the mantle. These plates are moving slowly at all times. Where the edges meet they either slide past each other, scrape together or crash head on. The area where the plates meet is called a fault line.
Earthquakes are measured on the Richter Scale. The higher the reading on the scale, the larger the earthquake and larger the tsunami. The same is when it is a low reading on the Richter Scale.
Seismic activity is the most common cause of tsunamis. Over the past two millenniums earthquakes have produced 82.3% of all tsunamis.
Thursday, September 27, 2007
What is the difference between a tsunami and a tidal wave?
Here is my final version of what is the difference between a tsunami and a tidal wave
The difference between a tsunami and a title wave is that tsunamis are created by an earthquake, landslide, volcanic eruptions or meteorites. Tidal waves are caused by tides and can mean a few different types of waves. The other difference is that tsunami waves spread from the original source while a tidal wave only goes in one direction, to the shore.
The difference between a tsunami and a title wave is that tsunamis are created by an earthquake, landslide, volcanic eruptions or meteorites. Tidal waves are caused by tides and can mean a few different types of waves. The other difference is that tsunami waves spread from the original source while a tidal wave only goes in one direction, to the shore.
What do tsunamis look like?
Here is my final version of what does a tsunami look like?
Stokes waveTo put it simple, a tsunami looks like a giant wall of water rushing towards the shore. The waves can be over 30 metres tall before they hit the shore and when they do, there is a rush of white water causing destruction.
Tsunami waves can take different shapes, there are 5 different wave types. The sinusoidal wave, stokes wave, solitary wave, N-waves and the double waves.
Stokes waveTo put it simple, a tsunami looks like a giant wall of water rushing towards the shore. The waves can be over 30 metres tall before they hit the shore and when they do, there is a rush of white water causing destruction.
Tsunami waves can take different shapes, there are 5 different wave types. The sinusoidal wave, stokes wave, solitary wave, N-waves and the double waves.
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