groups		the bending of a wave as it passes around an obstacle
covalentbond		this group of elements occupies the upper right corner of the periodic table
wavelength		the size of the waves disturbance
pulse		the time it takes for earth to make one revolution around the sun
reflection		the crust and upper mantle make up this
Mendeleev		the milky way is this type of galaxy
divergent		how long does it take the earth to make one complete rotation on its axis
oneyear		the distance light travels in one year
chemicalbond		the horizontal rows on the periodic table are organized into these
superposition		s-waves can only travel through this
bigbangtheory		NaCl is an example of this type of bond
epicenter		the exact age of a fossil
tectonicplates		an opening in the earth's crust through which an eruption takes place
lithosphere		a chemical reaction that releases energy
gamma		the top of a wave
era		all of earths weather occurs in this layer of the atmosphere
spiral		an attractive force that holds atoms together
earthquake		the point on the earths surface directly above the focus
metalloid		the first person to successfully use a telescope
volcano		the vertical columns on the periodic table are organized into these
diffraction		a crack in the earth's crust
product		this person is credited for developing the first periodic table
electron		the theory that suggests all matter that exists today was concentrated in a small object then exploded
pluton		___ rays have the highest frequency on the EMS
nova		HCl is an example of this type of bond
fault		the supercontinent that means "all earth"
oneday		the substance that participates in the chemical reaction
ringoffire		a metal that can be hammered out or rolled into thin sheets
absoluteage		the bending of a wave as it passes from one medium to another
refraction		the sudden brightening of a white dwarf
exothermic		the place where over 50% of earth's volcanoes are locates
troposphere		a metal that can be pulled through a wire is
amplitude		an element with properties of both metals and nonmentals
three		the skaking of earths crust caused by a release of energy
fossil		the number of seismograph stations needed to determine the epicenter of an earthquake
periods		the bottom of the wave
luster		the tendancy of a surface to be a good or poor reflector of light
lightyear		the law of ___ states that the oldest rocks are on the bottom and the youngest rocks are at the top
synthetic		elements that are manufactured in the laboratory are called
period		the smallest unit of geologic time
pangaea		another name for an igneous intrusion
galileo		the point on the fault plane at which the first earthquake movment occurs
focus		the average weather over a long period of time
trough		the subatomic particle that is actively involved in bonding
crest		a chemical reaction that absorbs energy
endothermic		any evidence of earlier life
ionicbond		___ boundaries are moving away from each other
ductile		a ___ is what an era in geologic time is divided into
malleable		when the angle of reflection = the angle of incidence it is called the law of ____
galaxy		a single back and forth motion of a wave
astronomy		pieces of lithosphere that move around on top of the asthenosphere
climate		the end result in a chemical reaction
nonmetals		___ boundaries are moving towards each other
solids		a large grouping of billions of stars clustered together
convergent		the distance from the top of one wave to the top of the next wave
reactant		the study of the universe