*The envelope of gases surrounding the earth or another planet.

*The Earth is surrounded by a large mass of gas called Atmosphere. It is about 348 miles thick. It supports life on Earth and separates it from Space.

tmosphere

edRock

* solid rock underlying loose deposits such as soil or alluvium. * As the Glaciers moves under its own weight. It "plucks" pieces of rock, which move with the glaciers as it travels and polishing the bedrock beneath.

ontinental shelf

 *The portion of the continental margin that extends as a gently sloping surface from the shoreline seaward to a marked change in slope at the top of the continental slope.

*  The continental shelf of a coastal State comprises the sea-bed and subsoil of the submarines areas.

ivergent Boundary

* where two plates are moving in opposite directions as in a mid-ocean ridge.

* New Crust is created by the intruding magma as the plates move apart.

* a linear feature that exists between two tectonic plates that are moving away from each other.

arth

* Earth is named after the ancient Germanic Goddess of the soil. It is the third planet from the Sun

* The planet on which we live; the world

* The 3rd planet that is alive and having living things in it.

ossil

* evidence in rock of the presence of past life, such as a dinosaur bone, an ancient clam shell, or the footprint of a long-extinct animal as well as life history artifacts.

*  Fossils are formed when minerals in groundwater replace materials in bones and tissue, creating a replica in stone of the original organism or of their tracks

alaxy

*  a giant structure that contains hundreds of billions of stars

* a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction

emisphere

* Either the northern or southern half of the Earth as divided by the equator, or the eastern or western half as divided by a meridian

* a half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles

gneous Rock

* a rock that has crystallized from a molten state

*  Igneous rock is formed through the cooling and solidification of magma or lava

* is one of the three main rock types, the others being sedimentary and metamorphic

upiter

* Jupiter is named after the Roman king of the gods.  It is the fifth planet from the Sun

* It is a giant planet with a mass one-thousandth that of the Sun, but two and a half times that of all the other planets in the Solar System combined

arst

*  a landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves, underground drainage and sinkholes

* formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum

atitude

* imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally, from east to west on a globe.

*  a celestial object north or south of the celestial equator, usually expressed in degrees and minutes

etamorphic Rock

* a rock changed from its original form and/or composition by heat, pressure,shearing stress, or chemically active fluids, or some combination of them

* Found at great depths below the Earth surface

* They are also foliated, which mean that the rock has layers

ebula

* a large amount of gas and dust in space, spread out in an immense volume

* was a name for any diffuse astronomical object, including galaxies beyond the Milky Way

* is sometimes the birthplace of stars, such as the Orion 

zone

* a molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere, at ground level, ozone is called photo-chemical smog, and is a respiratory irritant and considered a pollutant.

late Tectonics

* The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle

* There are three types of tectonics

• Convergent
• Divergent
• Transform