Earth's Interior
The layer of Earth composed of solid iron and nickel.
What is the inner core?
The process by which magma reaches Earth's surface.
What is volcanism?
The time required for half of a radioactive substance to decay
What is half-life?
The boundary between two different air masses?
What is front?
The two days each year when day and night are of equal length
What is equinoxes?
The theory explaining the movement of Earth's lithospheric plates.
What is Plate Tectonics?
Rock formed fromt he cooling and solidification of magma or lava
What is igneous rock?
The remains or traces of organisms preserved in rock
What is Fossils?
A low-pressure weather system associated with stormy weather
What is a cyclone?
The galaxy in which our solar system is located
What is the Milky Way Galaxy?
A boundary where two plates move away from each other.
What is Divergent Boundary?
Rock formed from layers of sediment that have been compacted and cemented.
What is sedimentary rock?
A fossil used to determine the relative age of rock layers
What is index fossil?
Lines on a weather map connecting points of equal air pressure
What is Isobars?
What is the main sequence stage?
The process by which oceanic crust sinks beneath a less dense plate.
Rock changed by heart and/or pressure without melting.
What is metamorphic rock?
The layer of gasses surrounding Earth.
What is atmosphere?
The temperature at which air becomes saturated and condensation begins
What is Dew Point?
The measure of a star's brightness as seen from Earth.
What is apparent magnitude?
Seismic waves that travel through both solids and liquids.
What are P-waves?
The dropping of sediment by an agent of erosion
What is deposition?
The trapping of heat in Earth's atmosphere by certain gases?
What is the greenhouse effect?
The path Earth follows as it travels around the sun
What is orbit?
The shift in the wavelength of light from a moving source
What is the doppler effect?