A rock is its age compared with the ages of other rocks.

A rock is the number of years since the rock formed.

To determine the relatives ages of sedimentary rock layers.

Lava that hardens on the surface.

Magma cools and into mass of igneous rock.

The surface where new rock layers meet a much older rock surface beneath them.

A fossil must be widely distributed and represent a type of organism that existed briefly

The matter you see including rocks is made of tiny particles

When all the atoms of a particular type of the same matter are the same.

Over time these elements break down , or decay by releasing particles and energy.

A radioactive element is the time it takes for half of the radioactive atoms to decay.

A record of the life forms and geologic events in Earth's history.

Geologists divide the time between Precambrian Time and present into three long units

Eras are subdivided into units of geologic time

A ball of dust and ice that orbits the sun.

Scientists have found that the continents move very slowly over Earth's surface because of forces inside Earth.

Is an animal that lives part of its life on land and part of its life in water.

Have scaly skin and lay eggs with tough leathery shells.

At the end of the Paleozoic Era many kinds of organisms died out.

A warmblooded vertebrate that feeds its young with milk.

When earthquakes occur they they produced this

results from a force pressing on an area

the layer of rock that forms Earth's outer skin.

Uppermost part of the mantle and the crust together from a rigid layer

is a layer of molten metal that surrounds the inner core

The transfer of energy through space is

Heat transfer within a material or between materials that are touching is?

is heat transfer by the movement of currents within a fluid?

A measure of how much mass there is in a volume of a substance.

Wegener's idea that the continents slowly moved over Earth's surface.

is and trace of an ancient organism that has been preserved in rock.

curve like the seam of a baseball along the sea floor.

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Semester 2 voc. Sc.

Semester 2 voc.

Term	Definition
Relative Age	A rock is its age compared with the ages of other rocks.
Absolute Age	A rock is the number of years since the rock formed.
Law of superposition	To determine the relatives ages of sedimentary rock layers.
Extrusion	Lava that hardens on the surface.
Intrusion	Magma cools and into mass of igneous rock.
Fault	A break in Earth's crust.
Unconformity	The surface where new rock layers meet a much older rock surface beneath them.
Index fossil	A fossil must be widely distributed and represent a type of organism that existed briefly
Atoms	The matter you see including rocks is made of tiny particles
Element	When all the atoms of a particular type of the same matter are the same.
Radioactive Decay	Over time these elements break down , or decay by releasing particles and energy.
Half-life	A radioactive element is the time it takes for half of the radioactive atoms to decay.
Geologic Time Scale	A record of the life forms and geologic events in Earth's history.
Eras	Geologists divide the time between Precambrian Time and present into three long units
Periods	Eras are subdivided into units of geologic time
Comet	A ball of dust and ice that orbits the sun.
Continental Drift	Scientists have found that the continents move very slowly over Earth's surface because of forces inside Earth.
Invertebrates	Animals without backbones.
Vertebrates	Animals with backbones.
Amphibian	Is an animal that lives part of its life on land and part of its life in water.
Reptiles	Have scaly skin and lay eggs with tough leathery shells.
Mass Extinction	At the end of the Paleozoic Era many kinds of organisms died out.
Mammal	A warmblooded vertebrate that feeds its young with milk.
Seismic Waves	When earthquakes occur they they produced this
Pressure	results from a force pressing on an area
Crust	the layer of rock that forms Earth's outer skin.
Basalt	Dark rock with a fine texture
Mantle	a layer of hot rock
Litosphere	Uppermost part of the mantle and the crust together from a rigid layer
Asthenospere	This soft layer
Outer core	is a layer of molten metal that surrounds the inner core
Inner core	is a dense ball of solid metal
Radiation	The transfer of energy through space is
Conduction	Heat transfer within a material or between materials that are touching is?
Convection	is heat transfer by the movement of currents within a fluid?
Density	A measure of how much mass there is in a volume of a substance.
Containal Drift	Wegener's idea that the continents slowly moved over Earth's surface.
Pangaea	A supercontinent
Fossil	is and trace of an ancient organism that has been preserved in rock.
Mid-ocean ridges	curve like the seam of a baseball along the sea floor.
Sonar	A device

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