Natural Disasters
What Natural Disasters happen when plates move?
Tsunamis, Volcanoes, and Earthquakes
the process of the denser plate
diving under the less dense plate due to density difference.
Subduction
Surface waves ______
cause the most damage
an instrument that measures and records details of earthquakes
Seismograph
S-waves occur ______
occur second
How do Tsunamis occur?
from colliding of transform boundaries
when two plates slide past eachother
Transform Boundary
P-waves occur ______ and what actions do they perform?
Occur first and they push and pull rocks to the ground
How do Mountains form?
form from convergent boundaries (colliding together)
Oceanic Crust to Continental Crust leads to _______
Cascade Mountains
How do Earthquakes occur?
occur from slips/strikes in transform boundaries
when two plates spread apart
Divergent Boundary
What actions do surface waves perform?
Move side to Side like a snake, or up and down like an ocean wave.
How do Ridges and Rafts form?
form from divergent boundaries (spreading apart)
Continental crust to Continental crust leads to ______
Himalayan Mountains
How do Volcanoes occur?
occur from slips/strikes in transform boundaries
when two plates collide together
Convergent Boundary
What actions do S-waves perform?
Occurs second and moves rocks up and down and from side to side
the center and most deadly part of an earthquake
Epicenter
Oceanic Crust to Oceanic Crust leads to ________
Mariana Trench
What do Earthquake eruptions occur from?
Convection currents beneath the Earth's surface which cause movement in the tectonic plate boundaries
What types of landforms can be formed when plates move?
Mountains, Ridges and Rifts
What are 3 Seismic Waves?
S-waves, P-waves, and Surface waves
How do you determine the epicenter of an earthquake?
To determine the epicenter of an earthquake, we use triangulation which is a method that uses distance information determined from 3 seismic stations to uniquely locate the earthquake.
Results of a Divergent Boundary
Causes new land to form
(This is an extremely slow process. For example, the Mid-Atlantic Ridge spreads 2 to 5 cm per year.)