geology
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what type of fossil? happens pretty fats and the whole body is preserved
preserved remains
what type of fossil? impression left by a leaf in soft sediment such as mud after some of the materials of that organism evaporates or becomes gasses
carbon film
occurs when a dinosaur might have walked through mud and left tracks
trace
once living material is replaced by minerals turning into stone
petrified
which group of rock is most likely to have fossils
sedimentary because metamorphic and igneous undergo severe pressure
transform boundaries
two plates sliding past each other in different directions
divergent boundaries
two plates moving away from each other
convergent boundaries
two plates moving towards each other
subduction zone
usually on convergent boundaries, when a plate of oceanic crust collides with basaltic crust
metamorphic to igneous
metamorphic rocks melt into magma. magma erupts and cools to create igneous rocks.
igneous to sedimentary
igneous rocks undergo weathering and erosion until they turn into sediment. the sediment is compacted and condensed into sedimentary rocks.
sedimentary to metamorphic
sedimentary rocks undergo heat and pressure until they form metamorphic rocks.
igneous to metamorphic
heat and pressure
metamorphic to sediment
weathering and erosion
example of the rock cycle rocks
granite, sandstone, quartzite
metamorphic
forms by: heat and pressure characteristics: rough, heavy, hard, sparkly, potting/lines examples: slate, marble, quartzite, schist, gneiss
sedimentary rocks
forms by: erosion and then being compacted characteristics: softest, muddy coloring, large chunks combined examples: shale, limestone, sandstone, coal
examples of igneous rocks
forms by: cool lava or magma characteristics: black and grey, rough, mainly spotted, some spongy examples: granite, balsalt, pumice, obsidian
adaptation
a change or process of becoming better suited for your environment
evolution
the process in which animals develop
natural selection
the process in which organism adapt to become better suited for their environment. weaker organisms are eliminated
fossil
remains or impressions of an organism
list the four layers of the earth
crust, mantle, outer core, inner core
what is the continental drift theory
alfred wegeners theory that the continents and the land masses were once in a super continent pangea and slowly drifted apart