Bayleys+Disasters

bayleys page

__** week 2  **__

> some bush fires How do volcano's erupt volcano's are formed when there is great stress in the earths crust and the pressure of magma reachers so high that it finds its way upwards causing an eruption. sometimes the magma chamber breaks in side and only reaches to the flack or summit of volcano and sometimes reaches the surface of the volcano. about earthquakes
 * earthquakes
 * landslide
 * volcanic eruptions
 * explosions
 * meteorites
 * earthquakes
 * landslide
 * volcanic eruptions
 * explosions
 * meteorites

.An //earthquake// occurs when rocks break under the stress created by the constant movement and collision of the thin jigsaw-like //tectonic plates// found at the surface of the Earth. Rock breakage is called //faulting// and causes a release of energy when stored stress is suddenly converted to movement. Vibrations known as //seismic waves// are produced - they travel outwards in all directions at up to 14 kilometres per second. At these speeds, it would take the fastest waves only 20 minutes or so to reach the other side of the Earth by going straight through its centre - that's a distance of almost 13,000 kilometres. The waves distort the rock they pass through, but the rock returns to its original shape afterwards. The //epicentre// is the point on the Earth?s surface directly above the source of the earthquake. The source, also known as the //focus//, can be as deep as 700 kilometres. Earthquakes do not occur deeper than this because rocks are no longer rigid at very high pressures and temperatures - they can't store stress because they behave plastically. Smaller events occur more frequently - in fact, most earthquakes cause little or no damage. A very large earthquake can be followed by a series of smaller //aftershocks// while minor faulting occurs during an adjustment period that may last for several months. Earthquakes can also cause //tsunamis//, which are giant ocean-waves that can cross an ocean and may cause extensive damage in coastal regions. In areas where there are steep slopes, vibrations may cause //landslides//. = = = About Tsunami's = A tsunami is a series of ocean waves with very long wavelengths (typically hundreds of kilometres) caused by large-scale disturbances of the ocean, such as: These disturbances can either be from below (e.g. underwater earthquakes with large vertical displacements, submarine landslides) or from above (e.g. meteorite impacts). Tsunami is a Japanese word with the English translation: "harbour wave". In the past, tsunamis have been referred to as "tidal waves" or "seismic sea waves". The term "tidal wave" is misleading; even though a tsunami's impact upon a coastline is dependent upon the tidal level at the time a tsunami strikes, tsunamis are unrelated to the tides. (Tides result from the gravitational influences of the moon, sun, and planets.) The term "seismic sea wave" is also misleading. "Seismic" implies an earthquake-related generation mechanism, but a tsunami can also be caused by a non-seismic event, such as a landslide or meteorite impact. Tsunamis are also often confused with storm surges, even though they are quite different phenomena. A storm surge is a rapid rise in coastal sea-level caused by a significant meteorological event - these are often associated with tropical cyclones.
 * earthquakes
 * landslide
 * volcanic eruptions
 * explosions
 * meteorites

week 5

Q.what are the layers of the earths structure? CRUST- The crust is about 25 milels thick beneath continents and above 6.5 miles thick beneath oceans. Most earthquakes occur within the crust.

MANTLE - The region just below the crust and extending all the way the down the earths core is called the mantle. The mantle is relatively flexible so it flows instead of fracturing.

CORE - Beneath the mantle is the earths core. The earths core consists of a fluid oouter core and a solid inner core. Because the outer core contains iron it when it flows it generates a magnetic field. This is the source of the earths magnetic field.

Q.what resources do we use from beneath earth?
 * natural gas
 * iron ore
 * diamonds
 * gold
 * silver
 * manesium
 * oil

How the rain forms

water droplets form from warm air. As the warm air rises in the ske it cools. water vapor (invisible water in the air) always exists in our air. warm air holds quitea bit of water. For example,in the summer it is usually very humid.when enough of these droplets collect together, we see them as clouds. If the clouds are big enough and have enough water droplets, the droplets bang together and form even bigger drops. When the drops get haevy, they fall because of gravity,and you see and feel rain.



** What is a hurricane? **

A hurricane is a huge storm! It can be up to 600 miles across and have strong wings spiraling inward and upward at speeds of 75 to 200 mph. each hurricane usually lasts for over a week, moving 10-20 miles per hour over the open ocean. Hurricanes gather heat and energy though contact with warm ocean waters. evaporation from the seawater increases their power. Hurricanes rotate in a counterclockwise direction around an eye. The center of the storm or eye is the calmest part. It has only light winds and fair weather.when they come onto land, the heavy rain,strong winds and large waves can damage buildings,trees and cars.

** Earthquake Safety Tips ** **BEFORE AN EARTHQUAKE:** Have a disaster plan. Choose a safe place in every room. It’s best to get under a sturdy piece of furniture like a table or a desk where nothing can fall on you. Practice DROP, COVER AND HOLD ON! Drop under something sturdy, hold on, and protect your eyes by pressing your face against your arm. If you live in an earthquake prone area, bolt tall furniture to the wall and install strong latches to cupboards. Prepare an energy survival kit for your home. By taking special precautions and checking for hazards before a disaster strikes, you will be much more likely to stay safe.

week 6

what is a fire tornado?

A fire tornado or fire whirl is just a tornado made of fire. It happens when centtain conditions(depending on air temperature and currents), acquires a vertical vorticity and forms a whirl, or a tornado-like effect. fire tornadoes may be whirlwinds sparted from the flames, either within the burn area or outside it. A fire tornado can make fires more dangerous.

What are the atmospheric layers above us? The atmosphere is divided into five layers. It is thickest near the surface and thins out with height until it eventually merges with space. 1) The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. weather occurs in this layer. 2) Many jet aircrafts fly in the stratosphere because it is very stable. Also, the ozone layer absorbs harmful rays from the Sun. 3) Meteors or rock fragments burn up in the mesosphere. 4) The thermosphere is a layer with auroras. It is also where the space shuttle orbits. 5) The atmosphere merges into space in the extremely thin exosphere. This is the upper limit of our atmosphere.

what effect dose the sun and the moon have to the earth The moon has a noticeable effect o the earth

The sun haets up the earth and evaporates water, then it turns into rain.

This week I found out that the sun and the moon has an effect on the earth and now I know what a fire tornado is (a fire tornado is a tornado with flames spining around it.
week 7

How can our solar system affect us?

** What causes lightning?​ ** Lightning is an electric current. Within a thundercloud way up in the sky, many small bits of ice (frozen raindrops) bump into each other as they move around in the air. All of those collisions create an electric charge. After a while, the whole cloud fills up with electrical charges. The positive charges or protons form at the top of the cloud and the negative charges or electrons form at the bottom of the cloud. Since opposites attract, that causes a positive charge to build up on the ground beneath the cloud. The grounds electrical charge concentrates around anything that sticks up, such as mountains, people, or single trees. The charge coming up from these points eventually connects with a charge reaching down from the clouds and - zap - lightning strikes!

**What causes a wildfire?** Common causes of wildfires include lightning, human carelessness, arson, volcano eruption, and pyroclastic cloud from active volcano. Heat waves, droughts, and cyclical climate changes such as El Niño can also have a dramatic effect on the risk of wildfires. Although, more than four out of every five wildfires are caused by people.





This week I found out that the solar system can affect us in all diffrent ways I also found out what causes a wild fire, lightning can, arson can and volcanos can there are all diffrent way that can make a wild fire.

week 8 ​

How do humans affect natute?
 * 1) loss of the worlds forest
 * 2) pollution from land fill
 * 3) deforestation (destroing the forest)
 * 4) over fishing
 * 5) green house gases

How has human use of land caused problems?

This week I found out that humans can affect the world in lots of diffrent ways like taking down the forest ,green house gas, many people fishing and lots of other things my message is to try little things that you think might halp the world and we might make a big diffrents. By Bayley Campbell
 * 1) water contamimating from industrial wast
 * 2) ettintion of animals
 * 3) globel warming