A
layer of soil that contains less organic material and more mineral mater than the other layers
subsoil
main agent of chemical weathering
water
meteor that lands on Earth's surface
meteorite
system in which 2 stars are bound together
binary star
sandy, gently sloping underwater plain that borders the coasts of continents
continental shelf
forms when rocks along one side of a fault move horizontally along the fault
strike-slip fault
hills that form when advancing glaciers overrun old piles of till
a star that is always above the horizon at a given latitude
circumpolar
galaxy that is flat with bulging nucleus and a "solid" disk
lenticular galaxy
oceanographic vessel that is lowered from a surface ship near the area to be studied and can operate without any outside guidance
Auv
what type of volcano pours out highly fluid lava during its mild eruptions
shield volcano
claims that understanding modern geological processes is the key to understanding the earth's geological history
uniformitarianism
familiar asterism that is a part of Ursa Major
Big Dipper
change in the light would be observed from a star moving toward Earth
blueshift
layer of the atmosphere acts like a giant mirror, bouncing certain types of radio waves back down toward the ground
ionosphere
what gemstone consists of corundum with traces of iron or titanium that give it a blue color
sapphire
Darwin based his evolution ideas on what
natural selection
constellation containing the brightest summer star
Lyra
point on the celestial sphere that is directly below the observer
nadir
convection cell that exists between latitude 30 degrees and latitude 60 degrees
temperate cell
sedimentary rock that consists of rough, angular fragments embedded in hardened sand or clay
breccia
planet with the fastest rotation
Jupiter
flame-like column of gas that erupts from the chromosphere
spicule
calendar that has leap years ever four years with no exceptions
Julian
angle of sun's rays