Geology Flashcards
Layers of Earth
inner- solid outer- liquid Lowe mantle- liquid Asthenosphere-warm butter solid Lithosphere-solid
Thickest layer
Lower Mantle
Thinnest layer
Lithosphere
which is more dense, oceanic or continental?
oceanic
4 pieces of plate tectonic movement
Jigsaw Puzzle
Fossil evidence
Geologic Features
Ancient climates
Jigsaw Puzzle
Shapes of continents fit
Fossil evidence
matching fossils on sepereate continents
Geologic Features
mt. ranges, ages, kinds of rocks
Ancient climates
glacier markings on separate continents
Why was it rejected
no driving force
jhfah
radioactive decay
friction
heat from earths core
driving force for plate tectonic movement
Mantle is a liquid
Temp becomes warmer as you go deeper
Mantle rock near core heats up and rises. As the rock rises, it cools; cool mantle sinks
Convection currents within the mantle drive the plate movement. density
3 types of plate boundaries
Transform, Divergent, convergent
Transform
Slide past, earthquakes, conserved
Divergent
Move away, rift valleys or MOR, formed
Convergent
Moves toward, mt, subduction zones, volcanoes, destroyed
What does Co2 and other gases do for our atmosphere?
allow sunlight without doing anything to atmosphere. They absorb the heat that is radiated from ground
What energy source is most used
fossil fuels
3 things to be sustainable
social, economic, environment
Qualities of an index fossil in order to be used for dating of layers
Easy to identify, common
Develop/ go extinct quickly
Found in all kinds of rocks
3 limitations to radiometric dating?
presence of radioactive isotope
Age of rock
Sedimentary rock
Solar benefits
non-polluting
renewable
Solar drawbacks
costly equipment
back up system need for night
Nuclear benefits
Efficient, on demand
