W.E.D. and rock cycle Flashcards
Rock cycle
continuous series of events when rock is transformed from one type to another
Weathering
breakdown of rock due to rain, wind, ice, sunlight and plants
Erosion
transport of fragments of rock by water, wind, ice or gravity
Deposition
natural process of adding transported sediments to a landform
Lithification
compaction and cementation of sediment into rock
sedimentary rock
rock formed from sediments
Metamorphic Rock
rock changed by heat and pressure
intrusive igneous rock
rock formed from cooling of molten rock BELOW Earth’s surface. Large Crystals
extrusive igneous rock
rock formed from cooling of molten rock ON Earth’s surface **No crystals
magma
molten rock below Earths surface
lava
molten rock that erupted onto Earth’s surface
sediment
rock fragments that have been broken down due to weathering
What material are most fossils preserved in?
Sedimentary rock
Law of super position
when rocks are stacked in layers, newer rock will be on the bottom and newest rocks on the top
3 things fossils can tell us about the past
1.) what an organsim looked like
2.) what living things were existing during a certain time period
3.)what a living thing ate