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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Earth's structure

    Today's blog is about Earth's structure and the layers of the Earth.I blog about how thick each layer of the Earth is and what they do.


First is the top layer the crust.The crust is about 35 kilometers thick on land.The crust is 15 kilometers thick at the bottom of the ocean.The crust is the layer we live on.It is cool hard rock so we can live on it.It contains tectonic plates that move the continents.
 

The next layer is the Mantle.The mantle is the thickest layer of the Earth.The mantle is about 2850 kilometers thick.The mantle is made up of melted rock.It is about 4000 degrees in the mantle.


Next is the outer core.The outer core is made up of iron and nickle.The outer core is the only layer of the Earth that is all liquid.It is about 2,200 kilometers thick.


Last is the inner core.The inner core is a ball of solid iron.It is compressed together so hard that it never melts even though it is as hot as the surface of the sun.

There is a movie called the core and I think it is cool.There is a link down at the bottom and some other stuff.


http://youtu.be/foAyvN6mVwQ
http://youtu.be/RiHRI_Z2Kgs
http://youtu.be/Q9j1xGaxYzY

PLATE TECTONICS!

    I am going to blog about plate tectonics today.This blog post will include the following: how the earth was formed,what Pangaea is,what are tectonic plates and what are six  plates.
    First things first the earth was once called Pangaea.Pangaea was made up as one continent.The continents were combined.Over time Pangaea started to break apart.North America was the first continent to break.Then came South America,Eurasia,India, and Africa.The reason they broke apart was because volcanoes.This happens because the plates move around in the earths crust and go down to the mantle.They have dead krill and other stuff from the seafloor on them.When they go to the mantle the heat burns them and produces carbon dioxide.When a volcanoe erupts the carbon dioxide is realeased.The seven main plates are the eurassian plate,indian plate,north american plate,south american plate,pacific plate,oceanic

Back to school

     

 Hey I am back at school and doing blogs again.I am going to blog about what I did this summer,what my goals are this year and my weaknesses from last year.

 I did not a lot of things over the summer.The first thing I did this summer is go on a week long cruise on the carnival freedom.It was so much fun and I was sad to come home.It docked in Jamaica,Grand Cayman and the Florida Keys.

                                         Here is a picture of the carnival Freedom

  They have a big water slide on the lido deck.They also have a 24 hour pizza bar and ice cream machine.If you do not want pizza or ice cream you can have a salad.They also show a movie every night on yhe lido deck.They have mini golf and a bascetball and court on the sky deck.

      

I went to a few summer camps and visited my grand parents and I stayed at home a lot,so any ways lets move on.

  My goals this year are to get more comments on my blogs.I want to be more creative and have better blog titles.

My weaknesses last  year was that it was my first year and I did not have any experience.This year I know a little bit more and have better topics to blog about.

Amphibians:I

   I know what your saying that you don't need to learn about this because you learned about frogs already,well you do because there are more than just frogs in the amphibian group and I am going to blog about them.

  The first thing I am going to blog about is the characteristics of AMPHIBIAN'S!First amphibian means double life that means in their life they live in water and on land.Amphibians have smooth slimy skin and must keep it moist or they will suffocate.There are three groups of amphibians frogs and toads,newts and salamanders and Sicilian.

  The frog I am going to blog about is the leaf frog.The leaf frog blends in with the fallen leaves in autumn.It is very small and relies on it's camouflage to survive an not be eaten.

The next thing I am going to do is blog about is the green toad.Personally I think it is ugly.The green toad  can be found in praries next to rocks.

The next one is the hammerhead salamander.It has a head like a hammer you could of guessed.It has smooth moist skin like other amphibians.This is my favorite amphibian.  

  

Seahorses,Porcupine fish and Hagfish wierd fish

    Seahorses' mouths look like a horse's mouth.There are about 40 species of seahorses.They live in shallow water and in tropical climates.Seahorses swim upright which means like it is standing up.When seahorses reproduce the male has the babies.That is possible because the female gives the male the eggs.Then a couple weeks later they hatch and swim away in the sea.

Porcupine fish are small,until they blow up like a beach ball!The reason they blow up is to protect itself from being eaten.They suck in water or air through it's mouth.It's bladder is full of poison.They have little spines on the outside of their body.They can also return to their normal size after their predator goes away.The puffer fish is a close relative to the porcupine fish.

The next fish is the hagfish.It does not have a jaw or any bones.It's skin is poisones.It has lower teeth.They are like a worm a slimy discusting worm.

  Flying fish can not actually fly,instead they glide.Flying fish can have either four or two fins.There are about fifty species of flying fish.When flying fish reproduce the females lay their eggs on a sturdy object like a big broken pine tree limb.Flying fish can jump 3 feet into the air,are about 15-18 inches long when they are full grown,can almost go 40 miles per hour, and can glide around 660 feet in one jump.



The last one is the salmon.Salmon reproduce where they were born.They can change from a fresh water fish to a salt water fish.After they are a year old they travel back to where they were born and reproduce.Many salmon die after reaching their destination and the cycle starts all over again.