Transcript Back - Crestwood Local Schools

Earth’s
Story
Relative
Dating
Absolute
Dating
Looking at
Fossils
Time Marches
On
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
Final Jeopardy
Scientists believe that this caused the
extinction of the majority of the dinosaurs
65 million years ago?
$100
asteroid
Back
What is the principle that states that
geologic change occurs suddenly?
$200
Catastrophism
Back
What is the science that studies past life
on Earth?
$300
Paleontology
Back
What principle states that geologic
processes that occurred in the past can be
explained by current geologic process?
$400
Uniformitarianism
Back
Where in England did James Hutton
observe rock formations that had to have
taken millions of years to form?
$500
Siccar Point
Back
What method is used to determine
whether an event or object is older or
younger than other events or objects?
$100
Relative dating
Back
What is the ideal sequence of rock layers
that contains all the known fossils and
rock formations on Earth, arranged from
oldest to youngest?
$200
geologic column
Back
A fault, intrusion, fold, or tilt can create an
________________ in rock layers,
causing a missing part of the geologic
column?
$300
unconformity
Back
What is the principle that states that
younger rocks lie above older rocks if the
layers have not been disturbed?
$400
superposition
Back
What unconformity do we call molten rock
that squeezes into existing rock and
cools?
$500
intrusion
Back
What method is used to measure the age
of an event or object in years?
$100
absolute dating
Back
What is the time needed for half of a
sample of a radioactive substance to
undergo radioactive decay?
$200
half-life
Back
What is an atom that has the same
number of protons as other atoms of the
same element, but has a different number
of neutrons?
$300
isotopes
Back
When parent isotopes decay into
daughter isotopes, what is given off?
$400
heat or thermal energy
Back
What method can be used to date dead
organic life forms or rocks younger than
50,000 years old?
$500
Carbon-14 Method
Back
What do we call the remains of physical
evidence of an organism preserved by
geologic processes?
$100
fossils
Back
What are insects often times trapped in to
help preserve their remains?
$200
amber or tree sap
Back
Preserved animal tracks, burrows, or
coprolite (animal dung) are good examples
of ___________ fossils.
$300
trace
Back
What is the name of a cavity that has been
filled in rock where a plant or animal was
buried?
$400
mold
Back
What is a fossil that is found in the rock
layers of only one geologic age and that
is used to establish the age of the rock
layers?
$500
index fossil
Back
What do we call the death of every
member of a species?
$100
extinction
Back
What is the scale that divides Earth’s 4.6
billion-year history into distinct intervals of
time?
$200
geologic time scale
Back
What kinds of animals were present in the
Mesozoic Era, which lasted from 248
million years ago to 65 million years ago?
$300
dinosaurs
Back
Where in North America is the best
example to see the Earth’s history recored
in rock layers?
$400
The Grand Canyon
Back
In which era did humans and mammals
begin appearing and have flourished for
over 65 million years?
$500
Cenozoic Era
Back
Where did Charles Doolittle Walcott
discover some of the oldest fossils in the
world (Hint: it’s located in western Canada)?
Burgess Shale Formation
Back