The process that breaks down rock through chemical changes

the mechanical process of wearing or grinding something down (as by particles washing over it)

the natural process of laying down a deposit of something

a layer of soil that differs in color and texture from the layers above or below it

also known as top soil, dark and rich with nutrients, best soil for growing crops.

also known as subsoil, in Indiana usually Clay or Sand. Not as good for growing crops.

Bedrock, impossible to grow crops.

Leaf litter and other surface debris not decomposed to soil yet.

a ridge of land that separates two river systems

a branch that flows into the main stream

the power behind the water cycle

A layer of rock that blocks water, usually made of clay or other impermeable rock.

caused by Earth's tilt

The changes in the Moon's appearance based on its rotation around the Earth.

caused by a planet's atmosphere trapping heat

The average distance between the Earth and the Sun

small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)

A ball of frozen dust and rock that orbits the sun and has a tail that glows

Gas that causes Neptune and Uranus to appear blue

Process needed to become a true star

the apparent change in position of an object when seen from different places

The light giving layer of the Sun

liquid precipitation

Form as water condenses in a cloud below freezing

When rain passes through freezing and thawing layers

Frozen pellets of ice falling from the sky

Temperature at which evaporation and condensation point meet

cT, air mass responsible for Warm and Dry weather

cP, air mass responsible for Cold and Dry weather

mT, air mass responsible for Warm and Wet weather

mP, air mass responsible to Cold and Wet weather

a large body of air with uniform characteristics

Shown on a map by blue triangles

Shown on a map by red half-circles

Shown on a map with red semi-circles and blue triangles on opposite sides

Shown on a map with red semi-circles and blue triangles on the same side

Caused by the rotation of the Earth

Scale used to rate tornadoes, based on damage and wind speed observed

Scale used to rate Hurricanes

Closest atmospheric layer to the Earth, most weather occurs here

2nd atmospheric layer from Earth's surface, Ozone layer is found here

Name means "Middle Sphere", most meteors burn up in this atmospheric layer

Temperatures rise very high in this atmospheric layer, Ionosphere is found here

Farthest atmospheric layer from the Earth

Reacts with iron in rocks and minerals

Uses water to break large molecules of minerals down into smaller molecules

Endangers plant and animal populations

Dissolves limestone

The same as the Moon's revolution, This is why we always see the same side of the Moon.

Mercury, Venus, Earth, Mars

Jupiter, Saturn, Uranus, Neptune

Combining atoms, happens in the Sun

Separating atoms, done in nuclear power plants

The brightness of a star because of its distance from Earth

The actual brightness of a star

When water vapor condenses into tiny droplets

When liquid water turns into water vapor, like when a puddle dries up