all of my chapter " clues to earths past" things to know for the test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| who is a person who studys fossils | a palentolojest
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| remains, imprints, or traces of prehistoric pasts are_________. | fossils
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| fossils can form if the organism is quickly_______ by sediments. | burried
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| organisms with______ parts are more likely to become fossils. | hard parts
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| types of | preservation
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| fossils in which the spaces indide are filled with minerals from groundwater are called___ | premineralized
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| carbon film results when ___________ then ____ becomes coal | a thin film or carbon residue forms a silhouette of the original organizum; carbonized plant material becomes coal
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| mold- ____ in rock left when ___ parts of an organisum decay | 1. cavity
2. hard
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| if ___ washes into a mold if can form a ___ | 1. sediment
2. cast
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| ______ remains are preserved in material such as ________, ________, or tar. | 1. origianial
2.ice
3. amber
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| ________ is an example of an organizums activities. | trace fossils
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| examples of trace fossils would be | foot prints from an animal or something
or a burrow like from a worm
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| index fossils are_______ | abundent, geographical widespread organizums that existed for relatively short periods of time
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| fossils can reviel information about past land forms and ______ | climates
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| principles of _____________ - process of reading undisterbed rock layers | super possition
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| _______ rocks that are on bottom layer | oldest
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| _______ rocks are on the top layers | youngest
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| how old something is in comparison to something else | relative ages
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| the age of ________ rock can be ditermined by examining layer sequences. | undesterbed
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| the age of _______ rocks can be ditermined by fossils or other clues. | disterbed
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| ________- are gaps in rock layers | unconformities
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| _____________ unconformities - rock layers are titles, and younger sediment layers are deposited horizontily ontop of the eroded and tilted rock layers. | angular
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| a layer of horizontial rock once exposed and eroded befor younger rock formed over it is ____ | disconformity
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| _______ conformity is sedimntary rock forms over eroded metamorphic or igneous rock | non conformity
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| the same rock but in differant locations, fossils can be used to ________ those rock layers | corolate
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| beta decay is | an isotope break down into a proton and electron with the electron leaving the atom as a beta partical ; a new proton is formed due to proton gain.
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| sn isotype gives off two protons and 2 neutrons as an alpha partical; a new eliment forms | alpha decay
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| patasslumarogon | dating is used to date the ancient rocks millions of years old.
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| carbon 14 | dating is used to date bones, wood, and charcoal up to 75,000 years old
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| the oldest known rocks are about | 75,000 years old
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| earths estimate is to be about ___ years old | 4.5 billion years old
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| uniformitarianism | earths processes occuring today are similar to those that occured in the past.
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