Layer by layer Come in Waves Shaken, not stirred Picture thisPotpourri

The outermost layer of a planet.

What is the crust?

The layer between the crust and the outer core.

What is the mantle?

A large fraction of Earth’s interior. Is made up of minerals rich in iron, silica, magnesium, and oxygen. Is 2,500 km thick.

What is the lower mantle?

A liquid layer that surrounds the inner core.

What is the outer core ?

The final layer of the Earth, it is a solid ball made of metal.

What is the inner core ?

A mechanical wave that propagates along the interface between differing media, usually as a gravity wave between two fluids with different densities.

What is a surface wave?

A seismic wave that moves through the interior of the Earth as opposed to surface waves that travel near Earth’s surface.

What are body waves?

These waves are the fastest traveling seismic waves and can travel through solids, liquids and gases.

What are primary waves?

A type of body wave and is the first waves from an earthquake to arrive at a seismograph.

What are P waves?

A seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.

What is a S wave/Shear wave?

A sudden and violent shaking of the ground sometimes causing great destruction, as a result of movements within Earth’s crust or volcanic action.

What is an Earthquake?

Someone who studies earthquakes and the propagation of elastic waves through Earth

What is a seismologist?

An instrument that measures and records detail of earthquakes such as force and duration.

What is a seismograph?

A graph output by a seismograph. It is a record of the ground motion at a measuring station as a function of time

What is seismogram?

A graph of arrival time, commonly P and S waves, recorded at different points.

What is a travel time graph?

What is the lithoshpere?

What is the asthenosphere?

What is the mesosphere ?

What is a rift valley ?

These are types of ______.

What is a fault ?

A numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations.

What is the Richter Scale?

A high sea wave caused by an earthquake, submarine landslide or other disturbance.

What is a tsunami ?

The degree of compactness of a substance.

What is density?

The quality of being hot;high temperature.

What is heat?

A continuous mountainous ridge on the floor of all the major ocean basins. The rifts at the crest of these ridges represent divergent plat boundaries.

What is a midocean ridge?