A
Molten rock that has erupted onto Earth's surface.
Molten rock beneath Earth's surface.
What is Lava & Magma?
3x points
A volcano that is no longer active and unlikely to erupt again.
What is Extinct?
2x points
A large ocean wave caused by underwater earthquakes, volcanic eruptions, or landslides.
What is Tsunami?
Currently erupting or showing signs of possible eruption (for a volcano); still functioning or in motion.
What is Active?
A landform where magma erupts from Earth's interior, forming lava flows, ash, and gases.
What is Volcano?
A volcano that is not currently active but could erupt in the future.
What is Dormant?
A well-tested scientific explanation that unifies a broad range of observations, such as the theory of plate tectonics.
What is Theory?
A crack in Earth's crust where rocks have slipped past each other.
What is Fault?
2x points
A system of measurement; in geology, often refers to the Richter or Mercalli scale for earthquakes.
What is Scale?
3x points
A testable explanation for an observation or phenomenon.
What is Hypothesis?
The shaking of Earth's surface caused by the movement of rock along faults.
What is Earthquake?
A force that pulls rock apart, common at divergent boundaries.
What is Tension?
A force that acts on rock to change its shape or volume, leading to faults and earthquakes.
What is Stress?
A location where magma from deep within the mantle melts through the crust, forming volcanoes like those in Hawaii.
What is Hot Spot?
2x points
An underwater mountain range formed at a divergent boundary where new oceanic crust is created.
What is Mid-Oceam Ridge?
A deep, underwater canyon formed at a subduction zone where one tectonic plate sinks beneath another.
What is Ocean Trench?
2X POINTS
The process of one tectonic plate sinking beneath another, often forming trenches and volcanoes.
What is Subduction?
A plate boundary where two tectonic plates move apart, leading to sea-floor spreading or rift valleys.
What is Divergent Boundary?
The process by which new oceanic crust forms at mid-ocean ridges and moves outward.
What is Sea Floor Spreading?
A plate boundary where two tectonic plates move toward each other, often forming mountains, earthquakes, or subduction zones.
What is Convergent Boundary?
A type of volcano formed from alternating layers of lava and ash; also means made of multiple parts.
What is Composite?
A force that causes rocks to slide past each other in opposite directions, common at transform boundaries.
What is Shearing?
A plate boundary where two tectonic plates slide past each other, often causing earthquakes.
What is Transform Boundary?
A measure of the strength of an earthquake, usually on the Richter scale.
What is Magnitude?
2X POINTS
A force that pushes or squeezes rock together, often associated with convergent boundaries.
What is Compression?