1
What often occurs at tectonic plate boundaries?
mountain building, volcanoes, earthquakes
what does the ozone layer absorb?
ultraviolet radiation
Deep currents flow along what?
ocean floor
the most abundant gas in the atmosphere is?
nitrogen
which of the following includes all the water on or near Earth's surface?
hydrosphere
What physical layer of Earth is located beneath the lithosphere?
asthenosphere
in the troposphere, which of the following decreases as altitude increases?
temperature and pressure
The part of Earth that contains the air we breath?
atmosphere
the transfer of heat by air currents(or currents in a liquid) is called?
convection
the deepest point on the ocean floor is in what ocean?
Pacific Ocean
how did the Himalayan Mountains form?
colliding tectonic plates at convergent boundaries
what is second most abundant gas in Earth's atmosphere?
oxygen
The thin outermost layer of Earth is called?
crust
the warmest temperature zone of the ocean is the?
surface zone
the measure of the energy released by an earthquake?
magnitude
What is the coldest layer of Earth's atmosphere?
mesosphere
Where do organisms obtain the energy they need?
biosphere
The removal and transport of surface material by wind and water is called?
erosion
one of the most important roles of the ocean is to?
regulate temperatures in Earth's atmosphere
where is most of the freshwater on Earth located?
icecaps and glaciers
which layer of Earth's atmosphere is closest to the surface?
troposphere
What is the largest ocean on Earth?
Pacific Ocean
the stratosphere is the atmospheric layer above the?
troposphere
the narrow layer of Earth where life-supporting conditions exist is called the?
biosphere
the ozone layer is located in the?
stratosphere