erosion
Erosion is a process that takes...
a long time
how many eons are there
4 eons
when water freezes into cracks it...
expands
name 3 types of rocks
igneous, metamorphic, and sedimentary
the oldest layer is on the...
bottom
name 2 types natural disasters that use seismographs
earthquakes and tsunamis
deposition is....
is the accumulation/buildup of material in an area
what is an ocean trench?
(answers may be summarized)
a long, narrow, deep depression in the ocean floor. typically one running to a parallel plate boundary and making a subduction zone
what is weathering?
breakdown from rock into sediment
how do people measure earthquakes on a daily basis?
They use seismographs