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Earth Quake

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  • 1. EARTHQUAKES !!! Melissa Jacobsen EARTHQUAKES !!!
  • 2. What Is An Earthquake?
    • An earthquake happens when energy in the earth’s crust is suddenly released. When tectonic plates push against each other, tension grows and suddenly the tension is released and an earthquake happens.
    • The epicenter of an earthquake is the place where the earthquake happened but the energy that is released from the earthquake can be felt far from the epicenter.
    • If an earthquake happens at the bottom of the ocean it can cause a tsunami!
  • 3. Plate Tectonics
    • Plate tectonics is the theory that describes movement of some massive plates that make up the crust of planet Earth – We live on these plates!
    Magma
  • 4. Where The Plates Come From
    • The movement of plates has caused the formation and break-up of continents over time. More than a billion years ago there was one big continent called Rodinia. Living creatures existed then but many have since become extinct.
    • About 600 million years ago, the large continent broke into 8 continents that later again came together to form another super-continent called Pangaea. Pangaea broke into Laurasia (which became North America and Eurasia) and Gondwana (which became the remaining continents).
    Australia India Africa South America Europe and Asia North America Antarctica
  • 5. Major Earthquake Zones
    • Most earthquakes happen in the “Ring of Fire”, which is the line around the Pacific Plate. USA, New Zealand and Japan are some of the countries that are most often hit by earthquakes.
  • 6. Japan, Earthquakes, Tsunami
    • The Japanese archipelago is located in an area where several continental and oceanic plates meet. This is the cause of frequent earthquakes and the presence of many volcanoes and hot springs across Japan.
    • The word “tsunami” is a Japanese word for a very large wave that can be created when earthquakes occur below or close to the ocean. “Tsu” means harbour and “Nami” is a wave.
    The earthquake pushes the water up and to the sides
  • 7. My Experiences With Earthquakes
    • At my home in Japan we very often felt the earth shaking. Earthquakes are very common in Japan. Sometimes I was in my room when an earthquake hit and I would call out: “EARTHQUAKE!!!”
    • First time I felt an earthquake I got really scared and hid under a table. I was afraid that we were going to die!
    My house Melissa: “Help!”
  • 8. Schools In Japan
    • At my school in Japan we practiced to evacuate the school if there was an earthquake because in Japan there are so many of them. We use helmets to protect our heads from falling objects. The helmets were always stored under our chairs in the classroom.
    • In case of an earthquake, a man would use the speakers to tell us to evacuate or to hide underneath our desks. It could be really serious and scary!
  • 9. Thanks for listening to my presentation!

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