Earth Layers
Earth was formed 4.5 _______ years ago.
what was earth before the crust, atmosphere, etc. formed
Molten rock is liquid rock that flows in the mantle and asthenosphere.
What did volcanoes release when they erupted?
Birth of Earth - Earth cooled and formed crust, then Volcanos errupted and led to earths atmosphere, water vapor condensed and then it rained forming oceans.
how many years after earth's formations did life appear?
the layers of the earth are the geosphere, the hydrosphere, the _____.
All life on those layers = THE BIOSPHERE
99% of all freshwater is not easily accessible
69% of frozen fresh water is in glaciers which are part of the ________
78 % of atmosphere ____________ and 21% is ________________ (just type in word).
1% is Argon and CO2 and other Greenhouse gases
Which of the following is correct
Which is correct, starting with the deepest most inner part of Earth
the inner core is solid, and the outer core is liquid
the thinnest layer of the geosphere is the
the asthenosphere is a zone of hot melted rock that flows inbetween the mantle and the crust
the crust is made up of two parts, the continental crust and the ______ crust
tectonic plates are found in the
what plate boundary does not cause volcanic activity, is least damaging, and is along fault lines
what plate boundary does cause volcanic activity and trenches, and is aka subduction zones
what plate boundary does cause volcanic activity and creates oceanic ridges
Lava is liquid rock in the mantle up to the crust
tsunamis are cause by the sea floor rising and _____
what society only uses renewable resources
why is population growing in an agricultural society
the germ theory lead to _____ increase
Eukaryotes came before Prokaryotes
Earth is the only planet know to sustain life because of all of the following except
Frozen layer of hydrosphere is called
________% of earth is water.
________% of earth is freshwater.
Fresh water abundance order
Which is the correcto order starting closest to land
All of the following make up most of the earth geo composition except
Earthquakes are measured using the Richter Scale; each unit has an amplitude of ________ x'sgreater
Nomads, who used sun and renewable resources, tools where sticks,stones, and bones, and enviro population and impace was low
Farmers who settled, increased pop and enviro impact beacuse they were using resources faster, domesticated animals, formed govts and citiies, PLOW and irrigation systems
Germ theory, steam engine, overpopulation, all enviro problems, non renewalbe resource use and abuse