Dating Methods Question Preview (ID: 38487)


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The age of a rock given as the number of years since the rock formed.
a) absolute
b) relative
c) unconformity
d) geology

The age of a rock compared to the ages of rock layers. (approximately)
a) absolute
b) radiometric
c) relative
d) fault

The time it takes for half of the atoms in a radioactive element to decay
a) absolute dating
b) isotope
c) half-life
d) atomic decay

Older rocks lie below the youngest rocks.
a) Unconformity
b) Cabon-14 dating
c) Law of Superposition
d) Law of Gravity

The breakdown of a radioactive isotope, releasing particles and energy.
a) Radioactive decay
b) Atomic decay
c) Fusion
d) Relative dating

A gap in the geologic column...
a) fault
b) unconformity
c) intrusion
d) extrusion

The Law of Superposition states...
a) younger rocks are below older rocks
b) older rocks are above younger rocks
c) all rocks are the same age
d) older rocks are below the youngest rocks

Carbon-14 is an example of ...
a) an isotope
b) a fault
c) an intrusion
d) fossil

Index fossil have 2 requirements...
a) very rare and lived a long time
b) are common and lived a short time
c) very rare and lived a short time
d) are common and lived a very long time

The Geologic Time Scale
a) does not exist
b) helps scientists determine the seasons
c) organizes earth's major events so earth's history is easier to study
d) helps scientists determine past climates

Air bubbles trapped inside ice cores help scientists determine...
a) absolute age of rocks
b) relative age of rocks
c) types of fossils in an area
d) past climates/atmospheric change

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