Here is my final version of how powerful are tsunamis?
A tsunami is one the most powerful forces in the world. People, boats and entire villages can be tossed inland or swept out to sea. Tsunami waves can rip up forests and are strong enough to lift cars into trees and knock houses from their foundations.
The power of a tsunami wave depends on what caused it and how powerful the event was. For example an earthquake with a high reading on the Rictor Scale will produce a more powerful tsunami than an earthquake with low reading on the Rictor Scale.
Thursday, September 27, 2007
How fast can tsunamis travel?
Here is a the final version of how fast can tsunamis travel?
The speed of a tsunami depends on how deep the water is, so the deeper the water, the faster the waves travelling. In very deep oceans a tsunami can travel on speeds of up to 900km per hour, faster than a jet aeroplane.
As it approaches land the shallow water acts as a brake at the front of the wave, slowing it down to around 200km/h. Meanwhile the back of the wave is still travelling very fast as it catches up to the front of the wave. This causes it then to look like a giant wall of water.
The speed of a tsunami depends on how deep the water is, so the deeper the water, the faster the waves travelling. In very deep oceans a tsunami can travel on speeds of up to 900km per hour, faster than a jet aeroplane.
As it approaches land the shallow water acts as a brake at the front of the wave, slowing it down to around 200km/h. Meanwhile the back of the wave is still travelling very fast as it catches up to the front of the wave. This causes it then to look like a giant wall of water.
How big are tsunamis?
Here is my final version of how big are tsunamis?
The size of a tsunami can be determined by what it is caused by. If the tsunami is caused by an earthquake, the bigger the earthquake is, the bigger the waves. It is the same with landslides, volcanic eruptions and meteorites.
The average size of a tsunami when it is travelling in open water is just centimetres in height. This is because the water is very deep and therefore the wave has a great height underwater. The length of the wave when it is in the open water can reach up to 100 kilometres long. These waves can be separated by as much as an hour. This is what makes a tsunami so powerful.
The size of a tsunami can change dramatically when it reaches the shore. Usually the length of the wave becomes smaller but is still very powerful. The height of the wave is the one that changes the most. The height changes from a few centimetres to more the 30 metres. This happens because when the wave reaches shallow water, the wave height underwater has no where to go so it pushes up making the wave a towering figure.
There is such thing as a mega tsunami which is a huge tsunami. A mega tsunami can be more than 100 metres high and can be very powerful. A mega tsunami can start like any other tsunami, but it usually takes something like a huge earthquake or landslide for it to become much more powerful than normal tsunamis.
The size of a tsunami can be determined by what it is caused by. If the tsunami is caused by an earthquake, the bigger the earthquake is, the bigger the waves. It is the same with landslides, volcanic eruptions and meteorites.
The average size of a tsunami when it is travelling in open water is just centimetres in height. This is because the water is very deep and therefore the wave has a great height underwater. The length of the wave when it is in the open water can reach up to 100 kilometres long. These waves can be separated by as much as an hour. This is what makes a tsunami so powerful.
The size of a tsunami can change dramatically when it reaches the shore. Usually the length of the wave becomes smaller but is still very powerful. The height of the wave is the one that changes the most. The height changes from a few centimetres to more the 30 metres. This happens because when the wave reaches shallow water, the wave height underwater has no where to go so it pushes up making the wave a towering figure.
There is such thing as a mega tsunami which is a huge tsunami. A mega tsunami can be more than 100 metres high and can be very powerful. A mega tsunami can start like any other tsunami, but it usually takes something like a huge earthquake or landslide for it to become much more powerful than normal tsunamis.
Sunday, September 23, 2007
Construction part 1
I have completed construction part 1. If have put the waterproof barrier which separates the land from the water on the model. The next stage is making underwater land plate which will lift the water up.
What does the word tsunami mean?
Here is my finished version of what does a tsnuami mean?
The word tsunami comes from two Japanese words “tsu”, meaning harbour, and “nami”, meaning wave. Put it together and it means harbour wave. This term can be misleading because tsunamis do not always occur at harbours. Tsunamis can hit any single coastline at any single moment.
The term tsunami or harbour wave was first created by local Japanese fisherman who returned to their local port to find the area surrounding their harbour was demolished. They had been at sea the whole day and did not see or feel the tsunami passing under them. When they arrived back at the harbour all the harbour area was destroyed by the massive wave. Tsunamis are rich in Japanese history, there have been 195 recorded tsunamis.
Tsunamis are in many other ancient cultures. For example in the Indigenous Australian Aboriginal history, there is a dreamtime story which tells of a meteorite falling from the sky and made the ground shake. The following morning the land was covered by water.
In the ancient Kwenaitchechat legend, there is a story where the local people felt the ground shake and they moved towards the beach to prevent being flung into a tree or end up on their sides. The water at the beach then started to recede and a series of large waves hit. The waves destroyed all that was in its path. Then on the on the other side of the Pacific Ocean in Japan, without any warnings, large tsunami waves started coming in. This proves that a earthquake in one region can make its way across oceans as a tsunami.
There are also other real life stories from tsunamis in the last two centuries from places like Krakatau, Burin Peninsula in Newfoundland and Papua New Guinea.
The word tsunami comes from two Japanese words “tsu”, meaning harbour, and “nami”, meaning wave. Put it together and it means harbour wave. This term can be misleading because tsunamis do not always occur at harbours. Tsunamis can hit any single coastline at any single moment.
The term tsunami or harbour wave was first created by local Japanese fisherman who returned to their local port to find the area surrounding their harbour was demolished. They had been at sea the whole day and did not see or feel the tsunami passing under them. When they arrived back at the harbour all the harbour area was destroyed by the massive wave. Tsunamis are rich in Japanese history, there have been 195 recorded tsunamis.
Tsunamis are in many other ancient cultures. For example in the Indigenous Australian Aboriginal history, there is a dreamtime story which tells of a meteorite falling from the sky and made the ground shake. The following morning the land was covered by water.
In the ancient Kwenaitchechat legend, there is a story where the local people felt the ground shake and they moved towards the beach to prevent being flung into a tree or end up on their sides. The water at the beach then started to recede and a series of large waves hit. The waves destroyed all that was in its path. Then on the on the other side of the Pacific Ocean in Japan, without any warnings, large tsunami waves started coming in. This proves that a earthquake in one region can make its way across oceans as a tsunami.
There are also other real life stories from tsunamis in the last two centuries from places like Krakatau, Burin Peninsula in Newfoundland and Papua New Guinea.
What is a tsunami?
Here is my finished version of what is a tsunami?
A tsunami is a series of waves or a wave train created when a body of water, an ocean or sea, is rapidly displaced on a massive scale. The disturbance vertically displaces the water column. Earthquakes, landslides, volcanic eruptions, explosions and meteorites can generate tsunamis. These waves can be generated in oceans, bays, lakes or reservoirs.
A tsunami has a very small wave height offshore (around centimetres in height) and a very long wavelength that can stretch for hundreds of kilometres between the wave crests and it but when the tsunami comes to shore it can get quite large vertically. Tsunamis can go unnoticed by boats at sea because a tsunami passing through feels like going over a hump. Fishermen in boats do not recognize it because a tsunami is not tall out in the sea but is very long and wide.
Tsunamis can travel across the ocean at speeds of up to 700kph. The speed of the tsunami waves depend on the depth of the water, so the deeper the water, the faster the tsunami. As it approaches land the shallow water acts as a brake at the front of the wave, slowing it down to around 200mph. Meanwhile the back of the wave is still travelling very fast as it catches up to the front of the wave. This causes it then to look like a giant wall of water.
These giant waves can travel for thousands of miles across the sea and still create a lethal energy that destroys people, wildlife, landscapes and even powerful enough to destroy buildings.
A tsunami is like when you throw a stone into a pond. The stone takes over the space that was previously filled with water. This movement of water disturbs the rest of the pool and produces a series of waves. Little ripples spread away from where the stone hit because the force is pushing the water away. A tsunami is like this because large waves spread from where the occurrence happened but the tsunamis are much, much larger.
A tsunami is a series of waves or a wave train created when a body of water, an ocean or sea, is rapidly displaced on a massive scale. The disturbance vertically displaces the water column. Earthquakes, landslides, volcanic eruptions, explosions and meteorites can generate tsunamis. These waves can be generated in oceans, bays, lakes or reservoirs.
A tsunami has a very small wave height offshore (around centimetres in height) and a very long wavelength that can stretch for hundreds of kilometres between the wave crests and it but when the tsunami comes to shore it can get quite large vertically. Tsunamis can go unnoticed by boats at sea because a tsunami passing through feels like going over a hump. Fishermen in boats do not recognize it because a tsunami is not tall out in the sea but is very long and wide.
Tsunamis can travel across the ocean at speeds of up to 700kph. The speed of the tsunami waves depend on the depth of the water, so the deeper the water, the faster the tsunami. As it approaches land the shallow water acts as a brake at the front of the wave, slowing it down to around 200mph. Meanwhile the back of the wave is still travelling very fast as it catches up to the front of the wave. This causes it then to look like a giant wall of water.
These giant waves can travel for thousands of miles across the sea and still create a lethal energy that destroys people, wildlife, landscapes and even powerful enough to destroy buildings.
A tsunami is like when you throw a stone into a pond. The stone takes over the space that was previously filled with water. This movement of water disturbs the rest of the pool and produces a series of waves. Little ripples spread away from where the stone hit because the force is pushing the water away. A tsunami is like this because large waves spread from where the occurrence happened but the tsunamis are much, much larger.
Tuesday, August 21, 2007
Got My Stuff
I have borrowed three books which have all the information I need. I have made a practice model of my real model and this weekend I am starting to construct it
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