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Different Kinds of Natural Disasters
Description

Avalanches
Avalanches kill an average of 200 people each year. The people included in the avalanche are normally people who spend time around the snow (e.g. snow-mobilers, snow-borders and skiers). Avalanches are snowballs which roll down the mountainside and shatter like a glass. Avalanches mostly happen after a snowfall. When the snow piles up quickly, it weakens the layer beneath the snow and causes a crack. This loosens the snow on the top layer causing the snow to move down the mountain at a great speed. A victim caught in an avalanche is unlikely to escape.
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Blizard
A blizzard is known as a severe winter storm. Strong winds, heavy snowfall and low temperatures make up a blizzard.The record of the most people dying in a blizard occured in 1888 and killed over 400 people. This was located in the US.
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Bushfire
A bushfire is also known as a wildfire or a forestfire. It is a natural disaster mostly caused by the weather conditions like heat and drought, also lightning strikes, arson (which is purposely setting a fire) or volcanos in volcanic areas. Bushfires are dangerous and sparks or floating embers can float a long distance only to start another bushfire.
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Drought
A drought occurs when a region doesn't receive much rainfall, and the landscape becomes very dry. Droughts are natural disasters, which are dangerous to human beings through the resulting water shortage, and cause damage to farms, and often farmers cannot feed their animals. Often droughts kill humans too. Africa suffers from droughts alot, as does Australia. Droughts cause food prices to go up and unemployment is likely to increse. Droughts often happen after bushfires because thousands of litres of water has been used to extinguish the flames.
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Earthquake
An earthquake occures when the rocks under the earths surface slip, forcing the upper layer to move. The area where an earthquake occurs is known as the fault zone. When the rocks (plates) collide against each other or slide over each other, the stress is released and it sends massive vibrations called seismic waves. This can cause whole buildings to collapse.
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Flood
A flood is a natural disaster as it results in the death of human beings, animals, and livestock. Crops may be destroyed in a flood, perhaps resulting in increased food prices due to crop damage. A flood can be defined as an event that happens when the rivers and dams overflow and mess up all the land that lies near them. When there is a flood, drinkinging water can become dangerously contaminated. Floods can result in severe damage to houses and often kill humans that are trapped in their houses.
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Hailstorm
A hailstorm is hailing, but about 10 times worse. Being caught in a hailstorm could result in bad injuries and death.The size of the ice lumps depends on the strength of the hailstorm. It has been observed that a hailstorm in early spring can turn the green grass white. A hailstorm can destroy crops and harm livestock.
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Heatwave
When the temperatures are far above normal, and this condition continues for a long time, then it is known as a heat wave. Heat waves happen more frequently in places that are closer to the equator. Severe heat waves could lead to crop failures and death of human beings. Domestic and wild animals also die in a severe heat wave. Heatwaves also lead up to droughts.
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Hurricane
Hurricanes, also known as tropical cyclones, are strong winds that are built up by numerous thunderstorms and heavy rain. While hurricanes can produce extremely powerful winds and strong rain, they are also able to produce high waves as well as starting tornadoes.
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Ice Storm
A rainstorm that occurs at a very cold temperature is known as an ice storm. An ice storm is a form of a hailstorm or a flood where cold and freezing rain is experienced. An ice storm is a natural disaster, which could cause damages and health hazards to mankind and livestock.
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Landslide
When a mountain becomes unstable because of erosion, earthquakes, volcanic eruptions or heavy rain, the natural disaster called a landslide occures.A landslide is a natural disaster that collapses boulders, huge tree's and houses. Landslides that occur due to heavy and continuous rainfall are known as mudslides.
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Lightning
Lightning is a natural disaster that occurs when electricity is loosened between rain clouds and the earth. Lightning becomes a natural disaster when it strikes the earth and causing destruction to mankind, buildings and all living things.
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Limnic Eruption
A limnic eruption is a type of natural disaster that happenes very rarely One can happen when the water in the lake rises(e.g. floods and their is an eruption in the water. The carbon dioxide replaces the water that results in loss of wildlife, humans and livestock. Llakes that erupt are known as limnically-active lakes.
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Sandstorm Eruption
A sandstorm is also known as the dust storm, which is a strong wind that blows across only certain regions (e.g Africa, hot countries). This natural disaster happenes because their is no vegetation and water to take care of the land. This is bad for the humans lungs to breath sand, dust.
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Tornado
One of the natural disasters caused by weather conditions is a tornado. A tornado is also called as a twister. A tornado is a strong and violent wind that swirls around multiple times at the speed of 450 kilometres.
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Tsunami
An earthquake or a volcanic explosion in an ocean creates a set of tidal waves which rises as high as 50 feet or more is a natural disaster known as tsunami. Tsunami is so powerful, it can knock down thousands of houses as well as killing humans even far from the starting wave.
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Volcanic Eruption
Volcano is one of the natural disasters which causes destruction to all living beings and plant life around it. When a volcano erupts it sprays out hot gases and molten rocks. There are around 2,500 active volcanoes worldwide.
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Did you know :
-Over the past decade, developing coutries have spent an average of 35 billion dollars per year in damages from natural disasters.
I did not copy and paste that table :)

Which Natural Disaster are the most dangerous???
Personally, I think Earthquakes are the most dangerous because they have the biggest effect on human beings. They can cause other Natural Disasters such as Tsunamis and Volcanic eruptions. I think Tsunamis can be caused by Earthquakes because there are underwater Earth Tremors that can create them. I also think that Volcanic Eruptions are a part of this because when the Earthquake appears the magma can start to shake and it will burst.



What do we use to clarify disasters and how are they measured?

To predict the size, location and timing of a natural disaster is a job for scientists. An extremely bad natural disaster normaly goes for an extended time, causing more damage. There are several tools to measure natural disasters including a rictor scale inventel by Charles F Richard in 1934, and much more specific tool designed to measure certain disasters.

Week 5.

What resorces do we use from under the earth?

Coal

Oil

Dirt

Crystals

Gems

Water

Gold

Clay

Salt

Iceland Footage


Week 6
What are the different atmospheric layers above us?

The atmosphere includes 5 layesr, the Exosphere, Troposphere, stratosphere, Mesosphere and the Thermosphere, which is 10km from the earth.
external image atmosphere.gif
What effect does the moon have on the earth?
  • Its reflected light helps animals see at night.
  • It is the source of much superstition and religious icons in the world's cultures.
  • It causes solar eclipses on rare occasions
  • It is the original source of "months" on our calendar.
  • It causes the Earth to wobble through its orbit around the sun(Earth does not rotate about its axis, but rather the Earth and the Moon rotate as a binary system around a point between them.)

What effects does the sun have on earth?
  • The sun is so big, it is said to be almost 1000 times bigger than Jupiter. Jupiter is about 1000 times the size of the Earth. It holds all the planits into it's orbit. It also works together with the moon, creating day and night.With out the sun, our solar system would not exist, it would fall apart completely. Without the sun keeping the earth in motion, we would not keep in motion, either spinning or in rotation around the sun. We would not have our atmospheres. We would float out into space and die. Our planet would freeze to near 0 K eventually. Our moon would float away and not be in our orbit. We would have no protection from Asteroids and comets, etc. They say in about 5 Billion years, the sun will burn up and possibly swell up to several times its size and swallow the earth whole and/or supernova and blow up and still destroy the earth.

Week 7 - How can what is in the solar system affect us? external image dwarfplanets.jpeg

The solar system is one big ring of planets, including the earth, and is named after the sun itself.The earth formed at the same time that all the other planets did. The whole system was once just one big disk of gas and dust, with a tiny sun in the middle. The way the earth was formed was all the other planets in the solar system crashing into earth, which made dams and hills ect. Until just a few years ago, there were 9 planets in the Solar System. However, the International Astronomical Union decided that Pluto is no longer a planet, so there are now only 8 planets in the Solar System. The solar system is being held in its place today by gravity, and the planets that are in the solar system are:



Planet
Discription of the planet
Picture
Amount of Planets away from the sun
Mercury
Mercury is the smallest planet in the solar system and can only been seen from earth in the moring or in pitch black because it is mostly in line with the sun at day time. Mercury has a similar apperance to the moon, only lots smaller. Mercury has no natural sattalites and and is filled with regions.
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Next to the sun.
Venus
Venus is the second closest planet to the sun, and after the moon, it is the brightest natural object in space. Venus is named after a famous Roman god.
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2 Planets away
Earth
Earth is the home to billions of humans and animals and is one of the only planets with water.It is the third planet away from the sun and the fifth largest in the eight planets in the solar system. Earth is often refered to as the 'World' or the 'Blue Planet'
A planetary disk of white cloud formations, brown and green land masses, and dark blue oceans against a black background. The Arabian peninsula, Africa and Madagascar lie in the upper half of the disk, while Antarctica is at the bottom.
A planetary disk of white cloud formations, brown and green land masses, and dark blue oceans against a black background. The Arabian peninsula, Africa and Madagascar lie in the upper half of the disk, while Antarctica is at the bottom.

3 Planets away
Mars
Mars is a Terrestrial planet, as are all of the planets above, meaning they are made out of silicate rocks. Mars can easily be seen from earth, with a bare eye.
File:Mars Hubble.jpg
File:Mars Hubble.jpg

4 Planets Away
Jupiter
Jupiter is 5th from the sun and the largest planet in the solar system. Jupiter is very heavy and is about two times heavier than all the other planets in the solar system combined. Jupiter is classified as a gas giant planet, along with Saturn, Uranus and Neptune.

5 Planets away
Saturn
Saturn is the second largest planet in the solar system and is also known as a gas giant planet. Saturn is the least danse planet in the solar system, if you found a pool big enough, it would float as well as an apple. Saturn is surrounded by 60 moons, they float around only a few kilometres away. Saturn is also one of the 5 planets that are visual from earth with a bear eye.

6 Planets away
Uranus
Uranus is the 3rd largest planet in the solar system and as named after the sky because it looks blue. It is also one of the five planets visual from earth. Uranus was also the first planet to b discovered by telescope and is the coldest planet in the solar system. The Uranus also has the next most obvious rings in the solar system, but they are made out of clear ice and Unerus has also only been visited once.

7 Planets away
Neptune
Neptune is the furthest from the sun and is also visual from earth. Neptune is 17x the mass of earth and is also very blue. Neptune is also a part of the several Gas Giant planets, but suprisingly is the smallest of the bunch.

8 Planets away



Give peace a chance
Give peace a chance