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CBHS Earth Science Chapter 6, 8 & 9 Flashcards | StudBud
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CBHS Earth Science Chapter 6, 8 & 9
CBHS Earth Science Chapter 6, 8 & 9
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How do we know the age of Earth's structures
Flashcards
30 cards
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Questions
30
Answers
1
What is meant by "partial melting"?
minerals & rock will melt at different temperature
nothing
minerals and rocks will fall apart at different temperatures
2
What is a fossil that is an impression or "picture" of a plant or fish called?
carbon footprint
carbon print
carbon film
carbonation
3
What is stated in the Law of Superposition?
oldest rock is on the top
youngest rock is on the top
rock is exactly 6 million years old
fossils are positioned in sedimentary rock
4
What does Ma represent in the geological column?
Millions of years ago
Moments ago
Many years ago
Monumental Moments
5
Where do coal deposits come from?
dinosaurs
marine life
bacteria
clouds
6
What is fossilized waste matter called?
mummification
sedimentation
coprolite
gastrolith
7
If you want to estimate the absolute of age of a body of moving water what method would you use
varve count
rate of erosion
radiometric dating
rate of deposition
8
What dating method states an exact age of an object?
absolute dating
sequential dating
relative dating
about dating
9
Which igneous rock is high in feldspar, silca and light in color
mafia
mafic
felty
felsic
10
Bacteria causes decomposition, what environment is hostile to bacteria?
temperate environment
tropical environment
cold frozen environment
cool moist environment
11
How many 1/2 lifes does it take for a parent isotope to decay 3/4th completion to a daughter?
four
one
two
three
12
Varves are materials deposited after being eroded. How many varves represent a single year?
three
two
one
four
13
What is uniformitarianism?
Present day geo. act. occurs faster than in the past
Present day geological activity is different from the past
Present day geological activity explains the past
Present day geo. act,happens at the same rate as in the past
14
What happened during the Carboniferous Period?
ferns and cone plants formed
mammals became extinct
dinosaurs developed
cynobacteria formed
15
Which is an example of Cross Cutting Relationship?
a new type of hair cut
igneous rock intrudes on sedimentary rock
sedimentary rock layers appear to be on an angle
a sedimentary rock splits in half
16
Hardened tree sap is also called ______
Amulet
Tree sap that hardened
Golden Sap
Amber
17
T/F - Radioactive decay occurs at a steady rate, so it is used to determine absolute ages
True
False
18
Which rock forms from cooling of lava on the Earth's surface
extrusive igneous
intrusive metamorphic
extrusive sedimentary
intrusive igneous
19
What are stones found inside a dinosaur called?
gastrolith
amber
dinosaur stones
coprolite
20
What happened during the Paleozic Era?
evolution occured
land masses merged
mass extinction
coal deposits formed
21
The same index fossil is found in rock layers in the US and Tibet. What does that mean?
The rock layers were formed at the same time
The rock layers in Tibet are older than the US
Nothing
The rock layers in the US are older than Tibet
22
Which time was marked by mass extinction?
Paleocene
Permian
Paleozoic
Perfection
23
Why is rate of erosion an estimate?
Erosion occurs at a consistent rate over long period of time
Erosion can change a great deal over long periods of time
Erosion does not occur over long periods of time
Erosion is a myth
24
Where are most fossils found?
in metamorphic rock
in a museum
in igneous rock
in sedimentary rock
25
Which igneous rock is high in magnesium, iron and dark in color
felty
mafia
felsic
mafic
26
In which time are cynobacteria found?
Cambrian
Precambrian
Permian
Carboniferous
27
Mammals developed during this time, (aka Age of Mammals)
Cenozoic Era
Paleocene Epoch
Jurassic Period
Precambrian Era
28
Which period is the Age of Fishes
Devonian
Cenozoic
Permian
Cretaceous
29
Which dating technique is accurate in object less than 70,000 years old?
fractional dating
relative dating
plutonium-stronium dating
carbon-14 dating
30
True or False: Mummification occurs in dry, arid environments
false
true