Card Set Information
type of rock that the grain size is quite small, but you can feel that the rock has a gritty texture of finen sand
pieces of other rocks
What happens if you put a drop of dilute hydroohloric acid on sedimentary rocks?
If you go back in time many millions of years ago when this rock was forming, in what sedimentary environment would you be standing?
ocean floor, marine environment
If you could go back in time many millions of years ago when sandstone was forming, in what sedimentary environment would you be standing?
river delta, flood plane, beach, dessert
What is the igneous rock family?
What is the metamorphic rock family?
What is the key characteristic of the metamorphic rock?
smooth, durable, flat
What rock is more durable- granite or sandstone?
A common and effective way to show how a measurement varies accross an area
On a contour map the raw data are scattered sampling or recording points and ___ are drawn to connect known or interpreted points of equal value
the difference in elevation represented by two successive contour lines
A measure of the earthquake's effect on people and buildings
Intensity is expressed by Roman numerals ranging for I to XII on the ___; high numbers indicate greater damage.
modified Mercalli scale
usful in locating the eqicenter of the earthquake
the measure of the energy released
The principal tool used to investigate earthquakes
The sharp snap-back sets up vibrations ___ which travel outward in all directions
the point inside the earth where the rocks ruptured
The fraction along which movement has taken place is called a
the place on earth's surface, directly above the focus, where the seismic waves are first felt
Seismic vibrations that travel through the solid earth are of two kinds __ and __ which start at the focus simultaneously
P waves and S waves
pH measure of how __ or __ liquids are
acidic or basic