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5th Hour Science

Notecards

TermDefinition
Geology Geology is the study of origin, history, structure and processes that shape earth.
Inter Core The Inter Core is the center of the earth and is the hottest.
Outer Core The Outer Core is between the mantel and the crust.
Mantle The Mantle is the thickest part of our earth. It is made up of tar and rocks which make the Mantle rough.
Crust The Crust is the barrier between the Mantle and the surface of the earth. It is thin under the ocean and thick on land.
Plate Techtonics Plate Techtonics are created when the earth's plate's move away from each other like a jigsaw puzzle.
Pangaea The land mass that existed 250 million years ago and was known as a super continent.
Theory of Continental Drift The Theory of the Continental Drift is that the plates move slowly taking millions of years to to move contintients.
Divergent When two plates apart from each other this is called a divergent boundary. Divergents are found mostly on the ocean floor.
Convergent When two plates collide into each other this creates a convergent boundary. Convergent boundaries can cause volcanoes, earthquakes and make mountains.
Transform Plates slide in a motion past each other.
Weathering Weathering can be defined as the breaking down of the lithosphere by the action of the wind, animals and plants.
Principle of Uniformity The processes that have changed the earth in the past still exist today. Principle Of Uniformity still goes on today
Mechanical Weathering Mechanical Weathering is the process of breaking down rocks into smaller pieces. When rocks fall off cliffs and break this is called mechanical weathering.
Chemical Weathering Chemical Weathering is the makeup of weathering. Example of Chemical weathering is metal rusting in the rain.
Subsurface The Subsurface lies beneath the surface of the land or sea.
Anticlines Upward fold when rocks and sediment are compressed by techtonic plates.
Synclines Downward fold when rocks and sediment are compressed by techtonic plates.
Fault A crack in the Earth's crust.
Plateau A land area having a level surface that is higher than the land on at least one side.
Epicenter The point on the Earths surface vertically above the focus of an earthquake.
Focus The focus is deep in the ground right under the epicenter. It is the point where an earthquake starts.
Seismic wave A seismic wave travels out from the eathquake's focus and it goes in all directions. They are vibrations.
Primary wave The fastest traveling seismic wave is called the primary wave.
Secondary wave The secondary wave is the second fastest traveling seismic wave.
Surface wave A surface wave is at the surface and it is the slowest wave.
volcano A volcano is an area on the Earth's surface through which magma and volcanic gases pass.
Magma Molten rock under the Earths crust is magma.
Lava Lava is a liquid magma that flows from the volcanic vent.
Magma chamber The magma chamber is a body of molten rock deep under ground that feeds a volcano.
Vents Magma rises from the magma chamber through cracks in the Earths crust through openings called vents.
Pyroclastic flow Pyroclastic flow is an explosive eruption blasting magma into the air and it hardens. It includes volcanic bombs, ash ,lapilli and ash blocks.
Viscosity Of a glutinous nature or consistency,sticky,thick,adhesive.
Caldera A large depression resulting from the explosions or collapse of the volcano this is called the caldera.
Crater the shaped depression or cavity on the surface of the earth is called a crater.
Rock Cycle The series of rock changes from one to another.
Erosion The process by which wind,water,ice or gravity transports soil and sediment from one location to anouther
Deposition The process in which materials are laid down
Sedimentary Rock Rocks formed through deposition and sediment in layers.
Metamorphic Rock Rock that was once one form of rock but has changed to another under heat and pressure.
Igneos Rock Rocks formed by cooling of Lava and Magma.
Intrusive igneous rock Rock formed from the cooling and solidification of magma beneath the Earth's surface.
Extrusive igneous rock Rock that forms as a result of volcanic activity at or near the Earth's crust.
Strata Layer's
Stratification The process in which sedimentary rocks are arranged in layers
Index mineral's Index minerals are used to estimate the temperature,depth,and pressure at which a rock undergoes.
Foliated the texture of metamorphic rock in which the minerals grain's are arranged in planes or band's.
Nonfoliated The texture of metamorphic rock in which the mineral grain's are not arranged in planes or bands.
Created by: Alec Manley