geological time
what was the age of reptiles what was the age of mammels
the mezoic era
the cenzoic ers
what are the 3 types of rocks we get
igneous sedmntry meatmerphic
what are all of the earths layers
crust, mantel, outer core, inner core
how did pangeea happened
the tectonic plates shifted arpart
what is the name of physical evidence of life from the past.
fossils
are rocks dense
yes
how do sicntist study the parts of the earth we cant reach
sesmic waves, earthquaks, and sicntific qusses
what is a convergnt boundri
when 2 plats crash into eachother
What was the era when there was only single cell life.
The Precambrian era.
what is the most dangres part of and eropution
the ash
How do we know that the outter core is liqued
sesmic waves
what is a divergnt plate boundri
when 2 plates move in oppsite dirctions from eachother
what era period and epoic did homibs arise
the cenzoic era, quntnary period, pleistoence
what are the 4 main types of volcanos
shelid, composite, cinder cone, lava dome
what mechanical layers
lithosphere, asthenosphere, mesosphere
what is a subduction
when the deser plates goes under the less dense plate
When did hominids arise as a group of the earths most dominate species.
They became dominant around 80,000 to 50,000 years ago.
what categorizes a super volcano
if it can make world devastation
what is the diffrence between mechnaical and compstinol layers of the earth
compostinol is chemical makeup
mechnaical is physical parts
how does convection current cause the techtonic plats to move
by creating a cycle of rising and sinking mantel matrial