science

lithosphere

the uppermost mantle is of different composition from the crust, together they form a mechanical layer called ____.

where do earthquakes often happen?

near or along the plate tectonic boundaries.

what are the layers of earth?

inner core, outer core, mantle, crust

the mantle is divided into three parts and these are:

uppermost solid mantle, astenosphere, lower mantle.

what is asthenosphere?

it has some plasticity. meaning its solid ut partially melted and flows very slowly like a liquid.

what is the texture of the tectonic plates that are floating above the astenosphere.

fluid like nature.

tectonic plate boundaries

lithospheric segments that shares borders with other plates.

the 7 major tectonic plates

pacific plate, antarctic plate, south american plate, north american plate, african plate, australian plate, eurasian plate

7 minor tectonic plates

nazca plate, caribbean plate, arabian plate, philippine plate, scotia plate, indian plate, cocos plate

what is philippines rich from?

natural resources

what can earthquakes do?

it can create new features.

convergent plate

forces will move away or will collide from each other.

what interacting of crusts can convergent create:

oceanic to continental, continental to continental, oceanic to oceanic.

oceanic to continental occurs when?

oceanic crust subducts underneath the continental crust.

oceanic to oceanic crust occurs when

when the older oceanic crust subducts underneath the younger oceanic crust.

continental to continental

neither of the two crusts subducts.
as they buckle, they create a mountain.

example of continental to continental convergent

indian plate and eurasian plate.

example of oceanic to continental convergent.

nazca plate and south american plate.

example of oceanic to oceanic convergent

north american plate and pacific plate

example of divergent plate

the mid ocean ridge

example of continental to continental divergent

east african rift valley

example of continental to oceanic divergent

african platre and arabian plate

what is divergent plate?

forces that will move away from each other.

how does scientists know that there are plate boundaries

traces of earthquakes, volcanoes, mountains and gps.

What does the Plate Tectonic Theory explain about the lithosphere of the Earth?

It is fragmented into several segments