The supercontinent that existed during the late Paleozoic and early Mesozoic eras, about 300 million years ago. It eventually broke apart to form the continents we know today.
Starts with
D
A type of plate boundary where two tectonic plates move away from each other. This movement results in the formation of new oceanic crust through volcanic activity and the creation of mid-ocean ridges.
Starts with
C
A type of plate boundary where two tectonic plates move towards each other. This movement can lead to the collision and subsequent subduction of one plate beneath the other, resulting in the formation of mountains, volcanic arcs, and deep ocean trenc
Starts with
T
A type of plate boundary where two tectonic plates slide past each other horizontally. This movement can result in earthquakes as the plates become locked and then suddenly release tension.
Starts with
C
The circular motions of material within Earth's mantle driven by differences in temperature and density. These currents are believed to be a driving force behind plate tectonics.
Starts with
S
The process by which one tectonic plate is forced beneath another plate into the Earth's mantle. Subduction zones are often associated with deep ocean trenches and volcanic activity.
Starts with
S
The process by which new oceanic crust is formed at mid-ocean ridges as tectonic plates move apart. As magma rises and solidifies, it creates new crust, pushing older crust away from the ridge axis.
Starts with
M
The geological processes by which mountains are created, including tectonic plate collisions, volcanic activity, and erosion.
Starts with
V
A geological feature formed by the eruption of magma, ash, and gases from beneath the Earth's surface. Volcanoes can take various forms, including cones, domes, and calderas.
Starts with
C
A steep-sided volcano built up by alternating layers of lava flows, ash, and volcanic debris. These volcanoes are associated with explosive eruptions.
Starts with
S
A broad, gently sloping volcano characterized by fluid lava flows and a broad summit. These volcanoes are typically not as explosive as composite volcanoes.
Starts with
A
A volcano that is currently erupting or has erupted recently. These volcanoes pose a potential threat to nearby populations and infrastructure.
Starts with
D
A volcano that is not currently erupting but has erupted in the past and may erupt again in the future.
Starts with
E
A volcano that is unlikely to erupt again because it is no longer connected to a magma source or is geologically inactive.
Starts with
R
A horseshoe-shaped area in the Pacific Ocean basin characterized by high levels of seismic and volcanic activity. It is associated with tectonic plate boundaries and is home to many active volcanoes.
Starts with
M
Molten rock beneath the Earth's surface. It is generated within the Earth's mantle and can erupt onto the surface as lava during volcanic eruptions.
Starts with
L
Molten rock that erupts onto the Earth's surface during a volcanic eruption. It can flow as a liquid or form solid rock when cooled.
Starts with
E
The point on the Earth's surface directly above the focus or hypocenter of an earthquake. It is the location where seismic waves are most strongly felt.
Starts with
H
The underground point where an earthquake originates. It is the point within the Earth where seismic energy is first released.
Starts with
F
A fracture or break in the Earth's crust along which movement has occurred. Earthquakes often occur along fault lines as tectonic plates move past each other.
Starts with
R
A logarithmic scale used to measure the magnitude or size of an earthquake. It quantifies the amount of energy released by an earthquake based on the amplitude of seismic waves.
Starts with
I
The perceived strength or severity of an earthquake at a particular location. It is measured based on the effects of the earthquake.
