Question

focus
the place ______ earth’s ____ where an earthquake ______. also called the hypocenter of an earthquake.
epicenter
directly ______ on the earth’s ____ is the earthquake epicenter. earthquake waves start at the focus and travel outward in all directions. earthquake waves ______ originate at the epicenter.
seismic waves - waves of ______ that travel through the earth’s ______, and are a result of earthquakes.
body waves - travels through the ______ of the earth, body waves ______ the surface waves emitted by an earthquake. these waves are of a higher frequency than surface waves.

1. primary - p waves - ______ wave that is felt. fastest body wave. move through ______. pushes & pulls as it moves.
2. secondary - s waves - ______ wave felt. ____ than p wave. only move through ______ rock. move rock particles up and down, or side - to - side - perpendicular to the direction that the wave is traveling

surface waves - travels ______ to the surface. a lower frequency than body waves. though they arrive ____ ______ waves, it is surface waves that are almost entirely responsible for the damage and destruction associated with earthquakes.

Explanation:

These are key definitions and properties related to earthquake terminology, based on earth science concepts. Each blank is filled with the standard term for the described feature.

Answer:

Focus

The place beneath Earth's surface where an earthquake originates. Also called the hypocenter of an earthquake.

Epicenter

Directly above the focus on the Earth's surface is the earthquake epicenter. Earthquake waves start at the focus and travel outward in all directions; do not originate at the epicenter.

Seismic Waves

Waves of energy that travel through the Earth's interior and surface, and are a result of earthquakes.

Body Waves

Travels through the interior of the earth, body waves are faster than the surface waves emitted by an earthquake. These waves are of a higher frequency than surface waves.

1. Primary - P Waves - First wave that is felt. Fastest body wave. Move through solids, liquids, and gases. Pushes & pulls as it moves.
2. Secondary - S Waves - Second wave felt. Slower than P wave. Only move through solid rock. Move rock particles up and down, or side-to-side—perpendicular to the direction that the wave is traveling

Surface Waves

Travels along parallel to the surface. A lower frequency than body waves. Though they arrive the last waves, it is surface waves that are almost entirely responsible for the damage and destruction associated with earthquakes.