May-June Spelling Program

Colegio Mahatma Gandhi, A. C.
Spelling Monthly Program with Meanings
May-June 2008
6th Grade

Ms. María Verónica Suárez Martínez


Lesson 28

electron: a subatomic particle that orbits an atom’s nucleus, has a negative electric charge, and has very little mass
element: a substance made up of only one kind of atom
epicenter: the area on Earth’s surface directly above the focus of an Earthquake
equilateral triangle: a triangle with three congruent sides
erosion: the removal and transportation of weathered materials
evaporation: the process by which liquid water changes into water vapor
exterior angles: angles formed outside two lines that are crossed by a transversal
fault: a break in Earth’s crust where rocks can slide past each other
first quarter: the phase of the moon where it is one-quarter of the way through its orbit and half of the moon is lighter
focus: the point inside Earth where an Earthquake begins
fossil fuel: an energy-rich resource formed when the buried remains of once-living organisms
fossil: any naturally preserved evidence of life

Lesson 29

front: the boundary between two air masses that collide
full moon: the phase of the moon in which the entire moon is lighted and appears bright and round
galaxy: a huge system of stars
glacier: an immense sheet of ice that stays frozen year-round
groundwater: water locater within the gaps and pores below Earth’s surface
hurricane: a large, rotating tropical storm system with wind speeds of at least 119 km (74 mi) per hour
igneous rock: rock formed when melted rock hardens
index fossil: a fossil of a type of organism that lived in many places during a relatively short lifespan
interior angles: angles formed between tow lines that are crossed by a transversal
intersecting lines: lines that cross at exactly one point
intertidal zone: the area of ocean between the high-tide point and the low-tide point
wedge: a simple machine made up of two inclined planes placed back to back

Lesson 30

near-shore zone: the area of ocean over the continental shelf that is relatively shallow
neutron: a subatomic particle that has the same mass as a proton but no electric charge
new moon: the phase of the moon in which only a dim outline of its shape is visible
n-gon: a polygon with n sides, angles, and vertices
nonmetal: an element that does not conduct electricity and is not malleable
nucleus: the center of an atom, usually made of protons and neutrons
obtuse triangle: a triangle with one angle greater than 90º
open-ocean zone: the area of ocean over the continental slope and abyssal plain
parallel lines: lines in a plane that are always the same distance apart, never intersect, and have no common points
perimeter: the word perimeter comes from the Greek rood words peri, meaning “around”, and metron, meaning “measure”
periodic table: a table that shows the elements arranged by their atomic numbers
perpendicular lines: lines that intersect to form 90º angles, or right angles

Lesson 31

skew lines: lines that are not in the same plane, are not parallel, and do not intersect
supplementary angles: two angles whose measures have a sum of 180º
third quarter: the phase of the moon in which is three-quarters of the way through its orbit and half of the moon is lighted
thunderstorm: a strong storm with rain, lightning, and thunder
tides: bulges of water caused by the pull of the moon on Earth’s oceans
topsoil: the top layer of soil, made in part from broken-up pieces of lower layers of rock
tornado: a violently rotating column of air that extends downward from a thundercloud and touches the ground
transversal: a line that crosses two or more lines
vertex: a point where two sides of a polygon meet
vertex: the point where two or more rays meet
vertical angles: angles that are opposite each other when two lines intersect
volcano: a mountain formed when molten rock is pushed to Earth’s surface and builds up