Chapter 10 Flashcards
What is a seismologist?
a scientist who detects and interprets seismic waves.
What are seismic waves?
vibrations that travel through Earth and are caused by events like earthquakes or human-made blasts.
What is a disturbance?
a movement that begins in one location and sets things in motion farther away.
What is a P-Wave?
seismic waves that move with a forward-and-backward motion; these
waves are faster than S-waves and travel through solids and liquids.
What is an S-wave
seismic waves that move with a side-to-side motion, are slower than P-waves, and only travel through solids.
What is a crust?
the outermost layer of Earth.
What is the mantle?
the hot, flowing, solid layer of Earth between the crust and the core.
What is a lithosphere?
a layer of Earth that includes the crust and upper mantle.
What is an asthenosphere?
the lower part of the upper mantle; lithospheric plates slide on this layer.
What is the core?
the center of Earth; it is divided into the inner core and the outer core.
What is the outer core made of?
Liquid.
What is the inner core made of?
Iron.
Describe the Earth’s interior?
Look on page 230.
What is the oceanic crust made of?
Basalt.
What is the continental crust made of?
andesite and granite.
