SCIENCE Flashcards
is an opening in a planet or moon’s crust through which molten rock, hot gases, and other materials erupt.
Volcano
is an Intense shaking of Earth’s surface. The shaking is
caused by movements in Earth’s outermost layer.
earthquake
is a series of mountains or hills ranged in a line and connected by high ground.
A mountain range / hill range
, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
The Ring of Fire
How are volcanoes, mountain ranges, and other geologic features are formed?
The Crust is made of solid rocks and minerals. Composed of igneous, metamorphic and sedimentary rocks.
Two Types of Crust
Continental rust
Oceanic rust
is the crust that makes up the continents. It is thicker and older than oceanic crust.
Continental Rust
is the crust below the oceans. It is thinner and younger than the continental crust.
Oceanic crust
is a geographical region in which very high levels of volcanic activity are present.
Volcanic Belt (Most volcanoes in the world are located along divergent plate boundaries. One of these boundaries is the Mid-Atlantic Ridge. and the said ridge was formed due to the separation of tectonic plates on both sides of the ocean.)
representing Alpine-Himalayan chains of Eurasia and northern Africa and epicenters of east African fault zone. This belt represents the collision or subduction zones of continental plates.
Mid-Continental Belt
is a narrow zone on the earth’s surface around which majority of earthquakes take place.
Earthquake Belt
is a three-dimensional surface or zone across which there is a significant change in the velocity (speed or direction) of motion of one lithospheric plate relative to the adjacent lithospheric plate.
Plate boundary
is a linear feature that exists between two tectonic plates that are moving away from. (parang kami ni ex)
Divergent boundary
is an area on Earth where two or more lithospheric plates collide (parang kami ni ex pag bumalik kami)
Convergent Boundary
are created when tectonic plates slide past each other horizontally along strike-slip faults or transform faults (parang charger sa outlet ko pag triny ko icharge na walang makita)
Transform Boundary
is the solid, outer part of the Earth.
lithosphere
A scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements.
Plate Tectonics
In (1915) Alfred Wegener, a German scientist, publish the theory which state that continent is moving.
Continental Drift Theory
[Difference Between this and plate tectonics… the former is continents moving while the latter is plate moving away.]
A geologic process in which tectonic plates– large slabs of Earth’s lithosphere split apart from each other. In 1920 the discovery of the long chain of mountains also called mid-ocean ridges, on the ocean floor revived the continental drift theory. (By Harry Hess, an American geologist.)
Seafloor Spreading Theory
was given by Arthur Holmes in the 1930s. It discussed the possibility of convection currents operating in the mantle portion These currents are generated due to radioactive elements causing thermal differences in the mantle portion.
the soul of Seafloor Spreading Theory…
Convectional current Theory
Alfred Wegner. His theory was that the continents fit together like puzzle pieces. (also pangea)
continental fit
types of plate margins
volcanoes
earthquakes
mountains
types of mountains
folded
fault-block
volcanic
upwarped
geological process, oceanic, lithosphere, recycled
subduction
fossil remains
fossil evidence
parts of earth?
asthenosphere
mantle
outer core
inner core
parts of earth?
asthenosphere
mantle
outer core
inner core
