SEAFLOOR SPREADING
In Seafloor spreading, what direction does the hot magma go?
Upwards
Where are most volcanoes located?
Pacific Ring of Fire
The full name of SONAR
Sound Navigation And Ranging.
Type of waves that is caused by the sudden movement of materials with the earth.
SEISMIC WAVES
Refers to number that characterizes the relative size of an earthquake
Magnitude
The point in the Earth's underground where the Earthquake actually starts
FOCUS
What are the 2 main types of seismic waves?
Body Waves & Surface Waves
The Andes Mountains formed as a result of:
Oceanic-continental convergence
These are the groups of mountains produced through two continental plates
Mountain ranges
Give the full name of the institute that tracks and predicts volcanic activity, and other related geotectonic events.
Philippine Institute of Volcanology and Seismology
A tool using sound waves to find things UNDERWATER
SONAR
This molten rock is found beneath the Earth's surface.
MAGMA
What is the instrument that records waves?
SEISMOGRAPH
Who is the American geologist that used SONAR to discover that the ocean floor is drifting apart?
HARRY HESS
A weak point in the tectonic plate where pressure within the crust is released
Fault
How is the new oceanic crust formed?
Cooling of magma at mid-ocean ridges
Most volcanoes are found along ____
Plate boundaries
A vast, underwater chain is called a ______
Oceanic ridge / Mid-Atlantic ridge
What type of plate boundary is responsible for the Himalayas’ formation?
Convergent boundary
The movement of heated materials upward and the movement of cooled materials downward is called:
Convection
In what country is Mount Kanlaon located?
Philippines
Which areas in the Philippines are affected by “The Big One” or West Valley Fault? Give at least 5.
Metro Manila, Quezon City, Rizal, Bulacan, Laguna, Cavite
A type of scale that is used to measure the strength of an earthquake's shaking at a specific location.
Modified Mercali Intensity Scale / MMI scale