Tectonics Flashcards
True or False: Earthquakes occur only at plate boundaries.
False
What type of plate boundary is where two plates move apart?
Divergent boundary
What is the layer of Earth located directly beneath the crust?
mantle
What is the name of the point on the Earth’s surface directly above the point where an earthquake actually happens?
Epicenter
What is used to measure the magnitude of earthquakes?
Richter scale
What type of volcano is characterized by gentle slopes and non viscous lava?
Shield volcano
What type of plate boundary is it when plates slide past eachother
Conservative
What are some hazards of an eruption
Ash cloud, pyroclastic flow, lahars, lava flow
Which type of tectonic plate boundary causes subduction?
Convergent boundary
True or False: A tsunami can be caused by an undersea earthquake.
True
What type of volcano cwill cause explosive eruptions?
Cone/Strato volcano
What is the area where the actual earthquake is taking place called?
focus
What is the term for the shaking of the ground caused by seismic waves?
Ground motion
Which type of volcano is formed from explosive eruptions and has steep slopes?
Stratovolcano
Where can volcanoes occur if not on a fault line?
Hotspots
What is the name of the scale used to measure the intensity of an earthquake’s effects?
Richter scale
What is the line where tectonic plates meet called?
fault line
What kind of lava is typically associated with explosive eruptions?
Viscous lava
True or False: The Ring of Fire is an area with a high level of tectonic activity.
True
What is a large volume of molten rock beneath the Earth’s surface called?
Magma chamber
What is the primary cause of earthquakes?
Movement of tectonic plates
What is the term for the gradual movement of the Earth’s crust due to tectonic forces?
Continental drift
What is the main effect of an earthquake?
Destruction of structures and landscapes
