Earth's History Question and answers
rated A+
Geologic Time - correct answer ✔Earth's history organized into four eras:
Precambrian, Paleozoic, Mesozoic, and Cenozoic;
A record of the geologic events and life forms in Earth's history
Index Fossil - correct answer ✔Distinctive fossil used to compare the relative
ages of fossils
Law of Superposition - correct answer ✔A scientific law that states that in
undisturbed sedimentary rock layers, older layers of rock lie beneath younger
rock layers.
Fossils - correct answer ✔Preserved remains of once-living organisms
Extinction - correct answer ✔A term that typically describes a species that no
longer has any known living individuals.
Absolute Age - correct answer ✔the age of a rock given as the number of
years since the rock formed
Relative Dating - correct answer ✔Any method of determining whether an
event or object is older or younger than other events or objects
Radioactive Dating - correct answer ✔A technique used to determine the
actual age of a fossil on the basis of the amount of a radioactive element it
contains
, Sedimentary rock - correct answer ✔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 - correct answer ✔A type of rock that forms from the cooling of
molten rock at or below the surface
Continental Drift - correct answer ✔The hypothesis that states that the
continents once formed a single landmass, broke up, and drifted to their
present locations
Plate Tectonics - correct answer ✔The theory that pieces of Earth's
lithosphere are in constant motion, driven by convection currents in the
mantle.
Convergent Plate Boundary - correct answer ✔A tectonic plate boundary
where two plates collide, come together, or crash into each other.
Divergent Plates - correct answer ✔plate boundary where two plates
separate, causes mid-ocean ridge
fault - correct answer ✔Tectonic plates sliding past one another (ex. San
Andreas fault).
geologic Era - correct answer ✔a major division of geological time; an era is
usually divided into two or more periods
geologic Period - correct answer ✔a record of the life forms and geologic
events in earths history.
rated A+
Geologic Time - correct answer ✔Earth's history organized into four eras:
Precambrian, Paleozoic, Mesozoic, and Cenozoic;
A record of the geologic events and life forms in Earth's history
Index Fossil - correct answer ✔Distinctive fossil used to compare the relative
ages of fossils
Law of Superposition - correct answer ✔A scientific law that states that in
undisturbed sedimentary rock layers, older layers of rock lie beneath younger
rock layers.
Fossils - correct answer ✔Preserved remains of once-living organisms
Extinction - correct answer ✔A term that typically describes a species that no
longer has any known living individuals.
Absolute Age - correct answer ✔the age of a rock given as the number of
years since the rock formed
Relative Dating - correct answer ✔Any method of determining whether an
event or object is older or younger than other events or objects
Radioactive Dating - correct answer ✔A technique used to determine the
actual age of a fossil on the basis of the amount of a radioactive element it
contains
, Sedimentary rock - correct answer ✔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 - correct answer ✔A type of rock that forms from the cooling of
molten rock at or below the surface
Continental Drift - correct answer ✔The hypothesis that states that the
continents once formed a single landmass, broke up, and drifted to their
present locations
Plate Tectonics - correct answer ✔The theory that pieces of Earth's
lithosphere are in constant motion, driven by convection currents in the
mantle.
Convergent Plate Boundary - correct answer ✔A tectonic plate boundary
where two plates collide, come together, or crash into each other.
Divergent Plates - correct answer ✔plate boundary where two plates
separate, causes mid-ocean ridge
fault - correct answer ✔Tectonic plates sliding past one another (ex. San
Andreas fault).
geologic Era - correct answer ✔a major division of geological time; an era is
usually divided into two or more periods
geologic Period - correct answer ✔a record of the life forms and geologic
events in earths history.
