Geologic Forces Flashcards
Process by which heat in the form of molten materials circulates inside the Earth.
- In Earth’s mantle hot rock rises and cooler rock sinks, creating a current which then break the litosphere into plates and move them around the surface of the planet.
Comvection currents
Break in the crust or in the rock formation of the Earth
Fault
TYPES OF FAULTS
Hanging wall has moved downward relative to the foot wall.
Normal fault
Hanging wall has moved upward relative to the foot wall.
Reverse fault
Net slip is relatively horizontal. Formed by sliding motion.
Strike-slip Fault
Point on the land surface directly above the focus.
Epicenter
Origin of the seismic energy
Focus / Hypocenter
Measures thenmagnitude of the largest jolt of an earthquake.
Richter Magnitude Scale
An opening where molten rock and gas escape from a magma chamber
Volcano
True or false?
The higher the silica and gas content of a magma, the less violent the eruption of a volcano.
False. “The MORE violent”
Simplest type of volcano.
A. Cinder cone volcano
B. Composite Volcano
C. Caldera volcano
A. Cinder cone volcano
Also known as stratovolcano
Composite volcano
A large depression formed when a volcano erupts and collapses
Caldera volcano
Breakdown of rocks without altering the chemical composition
Physical weathering
Decomposition of rocks upon exposure to air, water, or chemicals
Chemical weathering
