Science Earthquake
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 Oct 5 2009, 01:48 AM
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#1
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Senior Member
637 posts Joined: Feb 2008 
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No earthquake, no life??? Is that what you learnt from Malaysian schools??
It's the platonic movement... Excuse me. What is platonic movement??? QUOTE(4Atulan @ Oct 3 2009, 05:12 PM) Without earthquakes, there would be no life on earth It's the platonic movements that have helped shape the lifeforms that we see today  |
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Oct 5 2009, 02:00 AM
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#2
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Senior Member
637 posts Joined: Feb 2008
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...platonic movement.....Again. what is platonic movement.???????Plate movement is NOT platonic movement. It is plate tectonics.
QUOTE(cherroy @ Oct 3 2009, 05:23 PM) Simple answer : platonic movement, and earthquake is norm phenomena. That's why we had mountain and valley. If not there won't be Himalaya. Everyday almost got earthquake depended on scale of it only. Some so tiny until people not noticing. Added on October 3, 2009, 5:27 pmTsunami is the result of seabed/floor movement, suddenly collapse or upwards or downwards movement of it. When 2 plate movement meet each other, there is interlocked and stress built up, until one day the stress is unbareable by one side, then one side give way in an instant which resulted earthquake, generally result one going up, one down. |
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Oct 5 2009, 03:08 AM
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#3
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637 posts Joined: Feb 2008
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When 2 plates meet and geser with each other... Excuse me??? What is geser?
...plate bergeser with each other. What is bergeser??? Is it Manglish??? What you learnt from your parents are wrong.There are 2 type of crusts. Continental and Oceanic . Continental crusts are lighter but thicker and of Sialic origin(silica aluminium rich) while oceanic crust are heavier but thinner and of Simac origin(silica manganese rich) When continental crust collided with one another, it resulted in obduction eg Himalaya range. When continental crust collided with oceanic crust, it resulted in subduction...aka oceanic crust going underneath the continental crust. Volcanic mountain ranges are born Vocano. There are 2 types..pyroclastic and non pyroclastic . Non pyroclastic volcano is known as 'hot spot' eg Hawaii's volcanoes. Lava are from the mantle and is rich in olivine(Mg, Fe)2SiO4 Pyroclastic volcano is the result of subduction. As the oceanic crust slide underneath the continental crust, it melts and lava migrates upward.The explosive force is the result of seawater turning into steam. If you have a pressure cooker you know what I am saying. Please. It is NOT platonic movement. It is tectonism or plate tectonics. Platonic refers to human compassion for the opposite sex Plate movement is the result of sea floor spreading eg the mid atlantic ridge.(MAR) MAR is located in the middle of the Altantic ocean. It is spreading, pushing North and South America away fro Europe and Africa. As North America moves westward, the Pacific plate is subducting underneath the North American plate ...so it kinda rotates... What you describe is the convection cells in the mantle. Fyi...the lithosphere is approx 70-80km thick.Continental crust is approx 10-30km thick while the oceanic crust is approx 5-10km thick. Continental and oceanic crusts are part of the lithosphere. And the lithosphere sits on the asthenosphere (the top part of the mantle) Earthquake is caused by plate movement. When 2 plates boundary rub against each other it is known as strike slip. Generally will not cause tsunami because there is little or no vertical displacement of water. Earthquake from subduction zone . If a fault line is perpendicular to the subduction zone there will be a minor earthquake. If a fault line is parallel to the subduction zone ...watch out. This is where the 'sudden release' of energy comes from . Eg Hold a plastic ruler and press down on one end. Release the press down end. This is where the sudden release of energy comes from. That end will bounces up and then downward. The rebounding effect is the cause of tsunami. This is why seawater retreats as the landmass moves upward. As the landmass moves downward, the seawater surge inwards QUOTE(SnoWFisH @ Oct 3 2009, 06:19 PM) Earthquake is normal, due to the platonic plates movements. When 2 plates meet and geser with each other, there's a lot of energy being emitted out. This energy causes stress to the plates and the plates will be on top of one another (overlap). So, there you have it, earthquake. Thats why the ring of fire is more prone to earthquake cuz thats where the plates bergeser with each other. This post has been edited by segamatboy: Oct 5 2009, 03:27 AMvolcano is caused by platonic plates movement, and platonic plates movement is caused by the movement in the magma (hot lava goes up, cooler lava goes down, so it kinda "rotates") below the plate. This rotation move the plates, thus forming volcanoes, earthquake and thus form tsunamis and of course, life. Correct if im wrong, thats what i understand when i asked the same Q last time to my parents  . |
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Oct 5 2009, 08:41 AM
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#4
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Senior Member
637 posts Joined: Feb 2008
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He said..."correct if im wrong'. I corrected him and you considered that as belittle. If you were to see some of the remarks my profs wrote on my essays and term papers you would considered them as savages . If you have my former profs as instructors, you will be crying and wanting to drop out of classes asap
QUOTE(~lynn~ @ Oct 5 2009, 03:13 AM) Jeez. Sure you seems to know alot of the topic, but that doesn't mean u have to go around belittling everyone else. |
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