1) the process by which rocks break down as a result of chemical reactions a) chemical weathering b) mechanical weathering c) plate tectonics 2) A spontaneous process in which unstable nuclei lose energy by emitting radiation a) radioactive b) eon c) era 3) a long and distinct period of history with a particular feature or characteristic. a) era b) period c) Mold fossil 4) forms when a mold is filled with sand or mud that hardens into the shape of the organism a) cast fossil  b) half-life  c) extinction 5) A rigid layer made up of the uppermost part of the mantle and the crust. a) Sedimentary b) Lithosphere c) Metamorphic 6) magma cutting through formed layers of sedimentary rock that then cools and hardens a) igneous intrusion b) ice core c) igneous 7) A long cylinder of ice obtained from drilling through ice caps or ice sheets; used to study past climates. a) Ice core b) index fossil c) relative dating 8) the study of the origin, history, and structure of Earth a) Geology b) geology time scale c) unconformity  9) The top rock layer and its fossils is the youngest and the bottom is the oldest. if the layers have not been disturbed a) Law of Superposition b) fault c) relative dating 10) a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found a) Index fossil  b) transitional fossils c) mechanical weathering 

Geology Quiz

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