Earth History Question Preview (ID: 42722)


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A vestigial structure is best described as ________.
a) an organ or body part that no longer serves a purpose
b) organisms that share a common ancestor however do not have similar functions (human and bat)
c) organisms that do not share a common ancestor yet have similar functions (bat and bird)
d)

A homologous structure is best described as ________.
a) an organ or body part that no longer serves a purpose
b) organisms that share a common ancestor however do not have similar functions (human and bat)
c) organisms that do not share a common ancestor yet have similar functions (bat and bird)
d)

An analogous structure is best described as ________.
a) an organ or body part that no longer serves a purpose
b) organisms that do not share a common ancestor yet have similar functions (bat and bird)
c) organisms that share a common ancestor however do not have similar functions (human and bat)
d)

How can we find absolute age?
a) law of superposition and index fossils
b) radiometric dating (carbon-14 and uranium-235)
c) none are correct
d) all are correct

How can we find relative age?
a) radiometric dating (carbon-14 and uranium-235)
b) law of superposition and index fossils
c) it depends
d) none are correct

In which type of rock would you most likely find a fossil?
a) intrusive igneous
b) metamorphic
c) sedimentary
d) extrusive igneous

If you find a fossil from an unknown era near a known fossil, what can you tell about age?
a) the top fossil is lit
b) it does not tell us anything
c) you cannot gain any evidence
d) they lived during the same time

___________ forms due to lava cooling and hardening on Earth's surface.
a) extrusive igneous
b) intrusive igneous
c) sedimentary
d) metamorphic

_________ forms due to magma cooling and hardening in the Earth's crust/mantle.
a) extrusive igneous
b) intrusive igneous
c) sedimentary
d) metamorphic

___________ needs two ingredients to form: heat and pressure
a) extrusive igneous
b) intrusive igneous
c) sedimentary
d) metamorphic

What does the Law of Superposition tell us?
a) pizza
b) youngest on bottom; oldest on top
c) oldest on bottom; youngest on top
d) it depends on the year

What is the largest unit of geologic time?
a) epoch
b) eon
c) era
d) period

Which era was the 'age of dinosaurs'?
a) cenozoic
b) mesozoic
c) paleozoic
d) precambrian

Which era is known as the 'age of mammals' and the current era?
a) cenozoic
b) mesozoic
c) paleozoic
d) precambrian

Which is more exact in telling how old a fossil is?
a) relative dating
b) mold dating
c) absolute dating (radiometric dating)
d) none are correct

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