earth science final exam
does stalactite or stalagmite grow on the roof of a cave
stalactite
How old is the Earth?
4.6 billion years old
how do we know how old the earth is ?
radiometric dating (quantitative)
seismic waves that move the material up and down
s waves
felsic
higher silica content - light colored
what is the correct term for cooling of lava?
crystallization
what is the correct term for cooling of lava?
solidification
ptolemy model
sun is the middle and everything revolves around it - correct model
how many parts can the lithosphere be divided into?
2- continental crust and oceanic crust
Igneous rock texture to describe microscopic crystals
Aphanitic
When the rock no longer resists the stress applied the deformation is __________
Brittle
Name of the process in which the core and mantle are separated
Differientiation
Most destructive seismic wave
L waves
Seismic waves that move the material side by side (movement looks like a snake)
L waves ( l stands for love)
are all deserts hot?
No, some are cold. They just have <5in. rain
fastest seismic wave?
P wave
chemical formula of quartz
SiO2
what are the 4 types of sedimentary rock?
clastic, biochemical, organic, chemical
4 basaltic lava flows
columnar, pahoyhoy, aha', pillow
t/f the asthenosphere is a layer composed of a highly viscous fluid
fals
mafic
low silica content - dark colored
biochemical
made of shells
clastic
sediments and fragments of preexisting rocks
Copernicus Model
the earth is in the center of the solar system and everything revolves around it
the higher the silica content,
the higher the viscosity of the lava flow
How are sinkholes formed?
the roof of an underground cave collapses. Caves must be limestone (calcite or carbonate rock)