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1. Ahmed Elgamal
Shaking our world

2. It where a convergent boundary take place,
When two tectonic plates meet, one may
slide underneath the other, that zone is
called a subduction zone.
Subductions zone mostly occur around the
Ring of Fire.
Subduction zones

4. Convection currents
Convection currents are the movement of
liquids and solids as their temperature rise.
It happens in the mantle where the magma
are, and it causes rocks to rise up, cools, then
go back to the bottom.
The Asthenosphere is another name of the
part where the convection current takes place.

6. Continental Drift
When a tectonic plate moves and causes the
continents to move is called a continental drift.
Alfred Wegener was the scientist who came up
with the idea of continental drift, he has collected
different types of evidence to support his theory.

7. How the continents were formed

8. Evidences of continental drift
★ Pangaea puzzle
when we look at the map we can see that the eastern
coast of south American and the western coast of African
can stuck together.

9. Evidences of continental drift
★ Rocks
There are same kinds of rocks in the places
that were stuck together once before like Africa
and the Americas.

10. Evidences of continental drift
★ Fossils
There were also same fossils in different places
in the world which supports that these places
were one piece before.

11. ● "Currents in the Earth's System." Currents in the Earth's System. N.p., n.d.
Web. 12 Apr. 2015.
● "Mantle Convection, Plate Tectonics, Earthquakes & Volcanoes." -
Maggie's Science Connection. N.p., n.d. Web. 12 Apr. 2015.
● "In Pictures of Pangaea That I've Seen, All of the (current) Continents Are
Touching, and They're on the Edge of Their Tectonic Plate. Why Are the
Continents Today Not Also on the Edge of Their Plates? •
/r/answers."Reddit. N.p., n.d. Web. 12 Apr. 2015.0
● "UCSB Science Line Sqtest." UCSB Science Line Sqtest. N.p., n.d. Web.
12 Apr. 2015
Sources