Download The reflectivity of a surface. A mirror or bright, snowy

The reflectivity of a surface. A
mirror or bright, snowy surface
reflects most of the incoming light
and has a high albedo, whereas a
rough, flat road surface has a low
albedo.
A glacier that forms in
mountainous terrain.
Chapter 21 Chapter 21 A mixture of gases, mostly
nitrogen and oxygen, with smaller
amounts of argon, carbon dioxide,
and other gases. The atmosphere
is held to Earth by gravity and
thins rapidly with altitude.
Iron-rich, layered sedimentary
rocks precipitated from the seas
mostly between 2.6 and 1.9 billion
years ago, as a result of rising
atmospheric oxygen
concentrations.
Chapter 21 The zone inhabited by life.
Chapter 21 Rocks such as limestone and
dolomite made up primarily of
carbonate minerals.
Chapter 21 The laying down of rock-forming
materials by any natural agent.
Chapter 21 Chapter 21 A large piece of space debris,
such as an asteroid, that crashes
into a planet.
Chapter 21 A shallow, nearly level area of
continental crust covered by
sediment and sedimentary rocks
that is submerged below sea level
at the edge of a continent between
the shoreline and the continental
slope.
Chapter 21 Any region that receives less than
25 centimeters (10 inches) of rain
per year and consequently
supports little or no vegetation.
Chapter 21 The removal of weathered rocks
by moving water, wind, ice, or
gravity.
Chapter 21 Solid Earth, consisting of the
entire planet from the center of
the core to the outer crust.
Chapter 21 An increase in the temperature of
a planet’s atmosphere caused
when infrared-absorbing gases
are introduced into the
atmosphere.
Chapter 21 A time of extensive glacial
activity, when alpine glaciers
descended into lowland valleys
and continental glaciers spread
over the higher latitudes.
Fuels formed from the partially
decayed remains of plants and
animals. The most commonly used
fossil fuels are petroleum, coal,
and natural gas.
Chapter 21 Parallel grooves and scratches in
bedrock that form as rocks are
dragged along at the base of a
glacier.
Chapter 21 All of Earth’s water, which
circulates among oceans,
continents, and the atmosphere.
Chapter 21 A glacier that forms a continuous
cover of ice over areas of 50,000
square kilometers or more and
spreads outward under the
influence of its own weight (syn:
continental glacier, ice cap).
Chapter 21 Chapter 21 Atoms of the same element that
have the same number of protons
but different numbers of neutrons.
The heat released or absorbed by
a substance during a change in
state, i.e., melting, freezing,
vaporization, condensation, or
sublimation.
Chapter 21 Chapter 21 A sedimentary rock consisting
chiefly of calcium carbonate.
Chapter 21 The continuous submarine
mountain chain that forms at the
boundary between divergent
tectonic plates within oceanic
crust. It circles Earth like the seam
on a baseball, forming Earth’s
longest mountain chain.
Chapter 21 A mound or ridge of till deposited
directly by glacial ice.
A layer of permanently frozen soil
or subsoil that lies from about a
half meter to a few meters beneath
the surface in arctic environments.
Chapter 21 Chapter 21 Solid rock or mineral fragments
transported and deposited by
wind, water, gravity, or ice,
precipitated by chemical
reactions, or secreted by organisms, that accumulate as layers in
loose, unconsolidated form. Chapter 21 A rock formed when sediment is
lithified.
Chapter 21 The region or boundary where a
lithospheric plate descends into
the asthenosphere.
Solid rock composed of lithified
till (sediment deposited directly
by glacial ice).
Chapter 21 Chapter 21