WGU C165 RECENT FINAL EXAMS QUESTIONS
AND ANSWERS SURE A+
✔✔sedimentary rock - ✔✔A type of rock that forms when particles from other rocks or
the remains of plants and animals are pressed and cemented together
✔✔igneous rock - ✔✔a type of rock that forms from the cooling of molten rock at or
below the surface
✔✔metamorphic rock - ✔✔A type of rock that forms from an existing rock that is
changed by heat, pressure, or chemical reactions.
✔✔rock cycle - ✔✔A series of processes on the surface and inside Earth that slowly
changes rocks from one kind to another
✔✔geologic time scale - ✔✔the standard method used to divide the Earth's long natural
history into manageable parts
✔✔Hadean Eon - ✔✔The oldest of the Precambrian eons; the time between Earth's
origin and the formation of the first rocks that have been preserved.
✔✔Archean Eon - ✔✔The oldest eon of Earth's history.
, ✔✔Proterozoic Eon - ✔✔The most recent of the Precambrian eons.
✔✔Paleozoic Era - ✔✔the part of geologic time 570-245 million years ago ;
invertebrates, fishes, amphibians, reptiles, ferns, and cone-bearing trees were dominant
✔✔Mesozoic Era - ✔✔Age of reptiles
✔✔Cenozoic Era - ✔✔Age of mammals
✔✔Analog - ✔✔a device or system that represents changing values as continuously
variable physical quantities
✔✔Principal of superposition - ✔✔Rock layers on the bottom are older and decrease in
age as you move up.
✔✔principle of cross-cutting relationships - ✔✔states that such features are younger
than all of the layers they cut through
✔✔Unconformity - ✔✔A break in the geologic record created when rock layers are
eroded or when sediment is not deposited for a long period of time.
✔✔Sedimentation - ✔✔the process in which soil particles and decaying organic matter
accumulate in layers on the ground or at the bottom of large bodies of water,
contributing to the formation of sedimentary rock
✔✔Deposition - ✔✔Process in which sediment is laid down in new locations.
✔✔Volcanism - ✔✔Any activity that includes the movement of magma toward or onto
Earth's surface
✔✔Fossiles - ✔✔The preserved remains of creatures that were once alive
✔✔earthquake - ✔✔The shaking that results from the movement of rock beneath
Earth's surface.
✔✔volcano - ✔✔A weak spot in the crust where magma has come to the surface
✔✔continental drift - ✔✔the gradual movement of the continents across the earth's
surface through geological time.
✔✔seafloor spreading - ✔✔The process that creates new sea floor as plates move
away from each other at the mid-ocean ridges
AND ANSWERS SURE A+
✔✔sedimentary rock - ✔✔A type of rock that forms when particles from other rocks or
the remains of plants and animals are pressed and cemented together
✔✔igneous rock - ✔✔a type of rock that forms from the cooling of molten rock at or
below the surface
✔✔metamorphic rock - ✔✔A type of rock that forms from an existing rock that is
changed by heat, pressure, or chemical reactions.
✔✔rock cycle - ✔✔A series of processes on the surface and inside Earth that slowly
changes rocks from one kind to another
✔✔geologic time scale - ✔✔the standard method used to divide the Earth's long natural
history into manageable parts
✔✔Hadean Eon - ✔✔The oldest of the Precambrian eons; the time between Earth's
origin and the formation of the first rocks that have been preserved.
✔✔Archean Eon - ✔✔The oldest eon of Earth's history.
, ✔✔Proterozoic Eon - ✔✔The most recent of the Precambrian eons.
✔✔Paleozoic Era - ✔✔the part of geologic time 570-245 million years ago ;
invertebrates, fishes, amphibians, reptiles, ferns, and cone-bearing trees were dominant
✔✔Mesozoic Era - ✔✔Age of reptiles
✔✔Cenozoic Era - ✔✔Age of mammals
✔✔Analog - ✔✔a device or system that represents changing values as continuously
variable physical quantities
✔✔Principal of superposition - ✔✔Rock layers on the bottom are older and decrease in
age as you move up.
✔✔principle of cross-cutting relationships - ✔✔states that such features are younger
than all of the layers they cut through
✔✔Unconformity - ✔✔A break in the geologic record created when rock layers are
eroded or when sediment is not deposited for a long period of time.
✔✔Sedimentation - ✔✔the process in which soil particles and decaying organic matter
accumulate in layers on the ground or at the bottom of large bodies of water,
contributing to the formation of sedimentary rock
✔✔Deposition - ✔✔Process in which sediment is laid down in new locations.
✔✔Volcanism - ✔✔Any activity that includes the movement of magma toward or onto
Earth's surface
✔✔Fossiles - ✔✔The preserved remains of creatures that were once alive
✔✔earthquake - ✔✔The shaking that results from the movement of rock beneath
Earth's surface.
✔✔volcano - ✔✔A weak spot in the crust where magma has come to the surface
✔✔continental drift - ✔✔the gradual movement of the continents across the earth's
surface through geological time.
✔✔seafloor spreading - ✔✔The process that creates new sea floor as plates move
away from each other at the mid-ocean ridges
