EARTH QUAKE
This is dangerous .It would be recorded in a scale
CAUSE OF EARTHQUAKE
The earth is divided into three main layers - a hard outer crust, a soft middle layer and a center core. The outer crust is broken into massive, irregular pieces called "plates." These plates move very slowly, driven by energy forces deep within the earth. Earthquakes occur when these moving plates grind and scrape against each other.
In California, the Pacific Plate and the North American Plate meet. The Pacific Plate covers most of the Pacific Ocean floor and the California coastline. The North American Plate stretches across the North American continent and parts of the Atlantic Ocean. The primary boundary between them is the San Andreas Fault. It is more than 650 miles long and extends 10 miles deep. Many smaller faults, such as the Hayward Fault, branch from the San Andreas Fault.
The Pacific Plate grinds northwestward past the North American Plate at a rate of about two inches per year. Parts of the San Andreas Fault system adapt to this movement by a constant "creep" resulting in frequent, moderate, earth tremors. In other areas, movement is not constant and strain can build up for hundreds of years resulting in strong earthquakes when it is released.
Unlike other natural disasters, there is no warning for earthquakes. Future earthquakes are a serious threat to Californians, which is why the Fire Department recommends preparing before an earthquake hits. Follow the link below for more information.
TORNADO
CAUSE OF TORNADO:The collision of warm, moist air with cooler air creates thunderstorms, sometimes severe ones.
Another factor is wind shear, which occurs when the speed and/or direction of the wind differ with height. If this wind shear is strong enough the air will begin to roll.
These rolling air currents can then be taken into the updraft of a thunderstorm and turned vertical. The storm begins to rotate and becomes a supercell.
Then, by mechanisms still not fully understood, the rotation tightens, intensifies and reaches toward the ground, becoming a tornado.
TSUNAMI
Tsunamis, also called seismic sea waves or, incorrectly, tidal waves, generally are caused by earthquakes, less commonly by submarine landslides, infrequently by submarine volcanic eruptions and very rarely by a large meteorite impact in the ocean. Submarine volcanic eruptions have the potential to produce truly awesome tsunami waves. The Great Krakatau Volcanic Eruption of 1883 generated giant waves reaching heights of 125 feet above sea-level, killing thousands of people and wiping out numerous coastal villages.
The 1992 Nicaragua tsunami may have been the result of a "slow" earthquake comprised of very long-period movement occurring beneath the sea floor. This earthquake generated a devastating tsunami with localized damage to coastal communities in Nicaragua.
Not all earthquakes generate tsunamis. To generate tsunamis, earthquakes must occur underneath or near the ocean, be large and create movements in the sea floor. All oceanic regions of the world can experience tsunamis, but in the Pacific Ocean there is a much more frequent occurrence of large, destructive tsunamis because of the many large earthquakes along the margins of the
Hail
Hail comes into existence when updrafts in the thunder clouds take the raindrops up towards the extremely cold regions in the atmosphere. They freeze and combine forming lumps of ice. As these lumps can be very heavy and are not supported by the updraft, they fall off with the speeds of about 100 km per hour or more. A Hail is created in the form of an enormous cloud, commonly known as thunderheads.
Lightning Lightning is a much underestimated killer. Lightning is an abrupt electric expulsion which comes from cloud to cloud or from cloud to earth followed by an emission of light. Lightning is a common phenomenon after heavy rain and can also occur around 10 miles off from rainfall. Most lightning victims are people who are captivated outdoors in summer during the afternoon and evening.
VOLCANO
To understand what causes volcanoes, you need to understand how the earth is made up. The earth has three main layers: the crust, the mantle and the core. The crust is made up of solid rock and varies in thickness. It is more than 60km thick under mountain chains like the Alps and Himalayas, but just 5km under the oceans. The mantle is a thick layer of molten rock (called magma), and the core is made up of an outer liquid layer and a solid centre.
Temperatures inside the earth are very high – over 5000’C in the core. This means that the planet on which we live is like a huge fiery ball of hot molten rock, surrounded by a few kilometers of relatively cool, hard rock – the crust. Because heat rises, the magma in the earth’s mantle has to find a way to rise upwards though the crust above it, rather like the way that hot air rises.
This is dangerous .It would be recorded in a scale
CAUSE OF EARTHQUAKE
In California, the Pacific Plate and the North American Plate meet. The Pacific Plate covers most of the Pacific Ocean floor and the California coastline. The North American Plate stretches across the North American continent and parts of the Atlantic Ocean. The primary boundary between them is the San Andreas Fault. It is more than 650 miles long and extends 10 miles deep. Many smaller faults, such as the Hayward Fault, branch from the San Andreas Fault.
The Pacific Plate grinds northwestward past the North American Plate at a rate of about two inches per year. Parts of the San Andreas Fault system adapt to this movement by a constant "creep" resulting in frequent, moderate, earth tremors. In other areas, movement is not constant and strain can build up for hundreds of years resulting in strong earthquakes when it is released.
Unlike other natural disasters, there is no warning for earthquakes. Future earthquakes are a serious threat to Californians, which is why the Fire Department recommends preparing before an earthquake hits. Follow the link below for more information.
TORNADO
Another factor is wind shear, which occurs when the speed and/or direction of the wind differ with height. If this wind shear is strong enough the air will begin to roll.
These rolling air currents can then be taken into the updraft of a thunderstorm and turned vertical. The storm begins to rotate and becomes a supercell.
Then, by mechanisms still not fully understood, the rotation tightens, intensifies and reaches toward the ground, becoming a tornado.
TSUNAMI
Tsunamis, also called seismic sea waves or, incorrectly, tidal waves, generally are caused by earthquakes, less commonly by submarine landslides, infrequently by submarine volcanic eruptions and very rarely by a large meteorite impact in the ocean. Submarine volcanic eruptions have the potential to produce truly awesome tsunami waves. The Great Krakatau Volcanic Eruption of 1883 generated giant waves reaching heights of 125 feet above sea-level, killing thousands of people and wiping out numerous coastal villages.
The 1992 Nicaragua tsunami may have been the result of a "slow" earthquake comprised of very long-period movement occurring beneath the sea floor. This earthquake generated a devastating tsunami with localized damage to coastal communities in Nicaragua.
Not all earthquakes generate tsunamis. To generate tsunamis, earthquakes must occur underneath or near the ocean, be large and create movements in the sea floor. All oceanic regions of the world can experience tsunamis, but in the Pacific Ocean there is a much more frequent occurrence of large, destructive tsunamis because of the many large earthquakes along the margins of the
Hail
Hail comes into existence when updrafts in the thunder clouds take the raindrops up towards the extremely cold regions in the atmosphere. They freeze and combine forming lumps of ice. As these lumps can be very heavy and are not supported by the updraft, they fall off with the speeds of about 100 km per hour or more. A Hail is created in the form of an enormous cloud, commonly known as thunderheads.
Lightning Lightning is a much underestimated killer. Lightning is an abrupt electric expulsion which comes from cloud to cloud or from cloud to earth followed by an emission of light. Lightning is a common phenomenon after heavy rain and can also occur around 10 miles off from rainfall. Most lightning victims are people who are captivated outdoors in summer during the afternoon and evening.
VOLCANO
Temperatures inside the earth are very high – over 5000’C in the core. This means that the planet on which we live is like a huge fiery ball of hot molten rock, surrounded by a few kilometers of relatively cool, hard rock – the crust. Because heat rises, the magma in the earth’s mantle has to find a way to rise upwards though the crust above it, rather like the way that hot air rises.
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