Plate Techtonics

Ethan B. 6th peroid 1/20/15

Proof of the continental drift Q1

Living animals in widely separated lands are similar. For example India and Madagascar have similar mammals, which are quite different from those in Africa, even though it is now near to Madagascar.

The reason why did people not belive in wangner Q2

Because he had no proof and it wasn't proved that its was true at that time and they where probably whore not sure that you could trust him and he had trouble convincing them that it was true. If I was their I would of thought he was crazy till it was proved true.

The two people who carried on Alfreds work Q3

The year after Wegener died, Arthur Holmes published his idea that thermal convection in the earth's mantle could cause continents to move. Holmes also suggested that the continents didn't move but were "carried" by larger pieces of the earth's crust. The controversy quieted down and fell from prominence until the 1960s, when new evidence was brought to the fore. Discoveries of the Mid-Ocean Ridge and the work of Harry Hess and others led to the development of plate tectonics. Though not without problems, this theory has gained wide acceptance

What plate techtonics and ocean treanches have in common Q7

They both involve the plates moving to create plate tectonics to create the trenches ,plate tectonics wouldn't exist without the plates moving how they are. Both plate tectonics and ocean trenches are both related to each other.

The realation of the rocks on the East Coast of North America and the ones right along the Mid-Atlantic ridge Q8 and 9

Over 4.6 billion years and it’s because the age of the Earth and the age of the rocks are almost the same.

Convection Currents Q10

Convection is the concerted, collective movement of groups. Diffusion of heat can take place in solids, but that is called heat conduction. Convection can be demonstrated by placing a heat source at the side of a glass full of a liquid, and observing the changes in temperature in the glass caused by the warmer fluid moving into cooler areas
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The major 7 plate bouderies Q11

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events caused by plate techtonics Q12 and 13

Valcanos and earthquakes are two of the many events.Volcanoes happen when magma rises to the surface of the earth, which causes bubbles of gas to appear in it. This gas can cause pressure to build up in the mountain, and it eventually explodes. When the magma bursts out of the earth, it is called lava.Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little.

Benifits of plate techtonics Q14 and 15

Everything from the water we drink to the air we breathe can be related back to tectonic forces.

Many of the Earth's natural resources of energy, minerals, and soil are concentrated near past or present plate boundaries. The utilization of these readily available resources have sustained human civilizations, both now and in the past.Most of the metallic minerals mined in the world, such as copper, gold, silver, lead, and zinc, are associated with magmas found deep within the roots of extinct volcanoes located above subduction zones.Volcanoes can clearly cause much damage and destruction, but in the long term they also have benefited people. Over thousands to millions of years, the physical breakdown and chemical weathering of volcanic rocks have formed some of the most fertile soils on Earth.