With Answers
\.aa - Answer-a slow-moving type of lava that hardens to form rough chunks; cooler that
pahoehoe
\.absolute age - Answer-the age of a rock given as the number of years since the rock formed
\.absolute brightness - Answer-The brightness a star would have if it were at a standard distance
from Earth.
\.aftershock - Answer-an earthquake that occurs after a larger earthquake in the same area
\.anticline - Answer-an upward fold in rock formed by compression of Earth's crust
\.apparent brightness - Answer-the brightness of a star as seen from Earth
\.asthenosphere - Answer-the soft layer of the mantle on which the lithosphere floats
\.axis - Answer-An imaginary line that passes through Earth's center and its North and South
Poles.
\.basalt - Answer-a rock that makes up much of the ocean floor
\.Big bang - Answer-The initial explosion that resulted in the formation and expansion of the
universe
, \.binary star - Answer-a star system with two stars
\.black hole - Answer-An object whose gravity is so strong that nothing, not even light, can
escape
\.cast - Answer-a type of body fossil that forms when crystals fill a mold or sediments wash into
a mold and harden into rock
\.chromosphere - Answer-The middle layer of the sun's atmosphere
\.climate - Answer-average, year-after-year conditions of temperature and precipitation in a
particular region
\.compression - Answer-the type of stress that occurs when an object is squeezed
\.conduction - Answer-the direct transfer of heat from one substance to another substance that
it is touching
\.continental drift - Answer-the hypothesis that states that the continents once formed a single
landmass, broke up, and drifted to their present locations
\.convection - Answer-the transfer of heat by the movement of a fluid
\.convection current - Answer-the movement of a fluid, caused by differences in temperature,
that transfers heat from one part of the fluid to another
\.convergent boundary - Answer-a plate boundary where two plates move tward each other