2. Forces That Affect Changes
on the Earth’s Surface
Earthquake and
Volcanic Eruptions
3. Do you have an idea on how
earth exist and formed?
Planet Earth was formed 4.6
billion years ago from the
same nebula cloud of gas
and dust that formed the
Sun and the other planets.
4.
5. Do you know how mountains and
volcanoes are formed?
https://www.youtube.com/watch
?v=K7Oq9_DU1Mc
https://www.youtube.com/watch
?v=Fd_XqYE2BWY
6. We are going to
deepen our knowledge
about by studying the
different crustal plates
and their movements..
8. A tectonic plate (also
called lithospheric plate) is a
massive, irregularly shaped
slab of solid rock, generally
composed of both continental
and oceanic lithosphere.
9. A fault is a break in the rocks that
make up the Earth's crust, along
which rocks on either side have
moved past each other.
10. A trench is a long narrow channel
that is cut into the ground .A
natural trench may also be a deep
hole on the bottom of the ocean
11. Continental plate: one of the
large pieces of the surface of the
earth that move separately.
12. An oceanic plate is a
tectonic plate at the bottom of the
oceans.
13. asthenosphere is the upper
layer of the earth's mantle, below
the lithosphere, in which there is
relatively low resistance to plastic
flow and convection is thought to
occur.
