1 Removing heat energy, or cooling, decreases the motion of molecules. 2  If heat is added to a solid, the molecules can move fast enough to change from a solid to a liquid. ( 3 Melting). 4  If heat is added to a liquid, the molecules can move fast enough to change from a liquid to a gas.
Fossils usually only form in sedimentary rock. Sediments have to accumulate over the organism in order to preserve it. This could be a rapid burial, such as a volcanic eruption or mudslide, it could be sap from a tree oozing over an insect, or simply a slow sediment accumulation on the bottom of a lake.
Fossils are typically found in sedimentary rock, almost all of which were originally deposited as sediments by moving water.Subsequent processes hardened them into sedimentary rock, as overlying pressure squeezed the water out and the grains were cemented together.ossils are typically found in sedimentary rock, almost all of which were originally deposited as sediments by moving water.