9/11/2001

   What happened on 9/11 was that planes were crashed into the pentagon,the north and south buildings of the world trade center and a field in Pennsylvania.
  There were 19  men at three different airports.They were split up into 4 groups each going to hijack a plane.There was 1 pilot and 4 muscle hijackers in each group.The first group got on their plane and headed off and the second group was not far behind.They took over the the planes a few minutes after take off and turned around to go to New York.
  When they turned around the next plane took off and was soon took over by the hijackers.Then same happened to the next plane.The first plane crashed into the north tower of the twin towers and the second crashed into the south.The third hit the pentagon and the last one was heading for the national monument or the capital building,but the passengers and crew members fought back and took control of the plane.Next they crashed into a field to prevent any more life to be lost.
  9/11 changed the  world by bringing the world closer together than it was.It brought out the best of people and showed true heroes that sacrificed their life for others.It makes everyone more careful with what they do.It also changed America by everyone caring more about  each other.         
  Americans will probably view this as a tragedy,but remember this also as a moment of true heroes and leaders.They will also try to prevent it as much as they can.The families who lost family members will have a family reunion.People will probably treat each other with higher respect,be more generous and be more compassionate.
  The best way to remember 9/11 is to feel sorry for the family who lost family members.I do not think it should be celebrated but remembered.
  The worst thing about 9/11 is that so many people were killed.The best thing that came out of 9/11 is that the world came closer together.Another good thing is that people were helping others as much as they could.






1)What happened on 9/11.
2)How did 9/11 change America.
3)How do you think Americans will view 9/11 in the future
4)What is the best way to remember 9/11?Should it be celebrated?
5)What are the best and the worst things about 9/11?

Run here comes the earthquake blog!

    An earthquake is a result of when two plates collide.What happens is that when they collide and start to build pressure.Then it is released and it is in the form of an earthquake.An earthquake releases different types of waves.The waves are called Seismic waves.There are three types of seismic waves.They are called Primary waves,Secondary waves and Surface waves.

   The first wave I will explain are the primary waves.Primary waves are the fastest waves and the first to be detected.You can detect an earthquake by using a seismogram.It tells you where the epicenter.The epicenter of an earthquake is above the focus on the surface.The focus is the center of an earthquake.


                          Here is a picture of a Primary wave.

                         This is what a seismograph looks like

There is also a richter scale.They use it to measure the strength or magnitude of an earthquake.It has numbers from 1 to 10 is the weakest and 9 is the strongest.



                         Here is what a ritcher scale looks like.

                          .

   Now  the Secondary waves.Secondary waves make the ground vibrate.They come a few seconds after the primary waves.They are stronger than the Primary waves,but they are slower.



                        Here is a picture of a Secondary wave.

  Last but not least the Surface waves.They are the slowest waves,but the strongest.They make the ground move in a spinning motion.They can make buildings collapse.They can also be called Love waves


                           Here is a picture of a Surface wave.

                            
                         This is what a surface wave can do.

   

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Well that is all and hope you enjoyed my blog.

Continental Drift

    I am going to be blogging about Continental drift.I know what you are saying what is Continental drift.Well I am going to blog about Alfred Wagner's theory of Continental drift and seafloor spreading.Hope you enjoy it.

    

      First Alfred Wagner was a German Scientist.Alfred was born on November 1st 1880.He came up with the Continental drift theory in 1911.He was drafted into the German Army in 1914.

                                            

  Here is a picture of Alfred Wagner.

    Now I will explain what his theory was about.He was talking about how the Earth Was made up of one giant Continent called Pangaea.He had some evidence explaining his theory like plant and animal fossils.He said that people have found four legged creatures in South America when their home is in Africa.


Continental Drift is when the continents move around because of the mantles heat.What happens is that the mantles heat moves the tectonic plates. The tectonic plates move about 1-4 inches a year.

                                  Here is a picture of Pangaea.

    Seafloor spreading is something that happens at the oceans crust.Seafloor spreading is when two plates move away from each other because of the mantles heat.Like how South America keeps moving farther away from Africa.

                       Here is a picture of Continental drift.

 

  

Here is a video about Continental drift

Here is a video of ice age 4 Continental drift.

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