Earth Flashcards
(24 cards)
Rock formed from cool cooled magma or lava.
Igneous Rock
Combination of 2 or more minerals
Rocks
Outer layer of earth.
Crust
Rock formed from compacted sediments.
Sedimentary
Pure substance found in earth. Combine to form rocks.
Minerals
Rock formed when another rock undergoes extreme heat and pressure.
Metamorphic Rock
Scale used to determine the hardness of rocks and minerals.
Moh’s Scale Of Hardness
Breaking down of rocks due to physical contact with other objects without changing what it’s made of.
Physical Weathering
Thickest layer of earth. Composed of magma.
Mantle
Occurs when one plate moves under the other.
Subduction Zones
Melted rock inside the earth.
Magma
Melted rock outside the earth.
Lava
Continents used to be one landmass, broke apart and drifted away.
Continental Drift Theory
Part of earths core composed of liquid metal.
Outer Core
Layer of earth broken into plate tectonics.
Lithosphere
Plates that separate.
Divergent Plates
Plates that slide past one another.
Transform Boundaries
One large landmass.
Pangaea
Part of earths core composed of solid metal.
Inner Core
Two divergent plates in ocean floor slowly move away from each other.
Sea Floor Spreading
Lithosphere is broken into places that constantly move.
Plate Tectonic Theory.
Plates the collide
Convergent Plates
Breaking down of rocks due to a chemical reaction.
Chemical Weathering.
The movement of weathered particles.
Erosion