ch 20 - pt 2 Flashcards
1
Q
The separation of planetary material according to density.
A
Differentiation
2
Q
A mechanical wave that travels through Earth’s interior by the vibration of particles perpendicular to the direction of wave travel.
A
Shear wave
3
Q
In geophysics, a mechanical wave of compression and rarefaction that travels through Earth’s interior.
A
Pressure wave
4
Q
An instrument that records seismic waves
A
Seismograph
5
Q
A mechanical vibration that travels through Earth; usually caused by an earthquake.
A
Seismic wave
6
Q
The layer of dense rock and metal oxides that lies between the molten core and Earth’s surface; also, similar layers in other planets.
A
mantle
7
Q
The study of planets by comparing the characteristics of different examples
A
Comparative planetology
