Transcript for mrs anderson

Climate Chapter 17
By: Brittany and Drew
Introduction
• In this presentation you will be learning about
climate. You may learn things you don’t know
and some review on the things you do know.
We hope you enjoy .
• Climate Chapter 17
Climate
• Before we start you should know what climate is.
Climate is the average weather conditions in an
area over a long period of time. It is determined
by two factors though, temperature and
precipitation.
• http://www.as.uky.edu/academics/departments_
programs/EarthEnvironmentalSciences/EarthEnvi
ronmentalSciences/Educational%20Materials/Do
cuments/elearning/module07swf.swf
Latitude
• Do you remember the thin horizontal lines
that circle the globe? These lines are called
lines of Latitude. Latitude is the distance north
or south and is measured in degrees from the
equator. The temperature of an area is mostly
determined by latitude.
• http://www.onr.navy.mil/focus/spacesciences
/animation/observingsky/kid.swf
Prevailing winds
• Prevailing winds are winds that blow mainly
from one direction. They are influenced on
area’s moisture and temperature. They also
affect the amount of precipitation that a
region receives. If the winds formed from
warm air they carry moisture. If they are for
formed cold air, they will probably however be
dry.
Elevation
• Do you know what elevation is? It is the height
of surface landforms above sea level. As
elevation increases then the atmosphere
become less dense. So, when the atmosphere
is less dense, it’s ability to absorb and hold
thermal energy is reduced and temperatures
are lower.
Surface currents
• The circulation of ocean surface currents has
an enormous effect on an area’s climate.
Surface currents, can be either warm or cold,
are stream like movements of water that
occur at or near the surface of the ocean.
• SchoolTube - Ocean Currents and how they
affect the climate
Climates of the world
• There are three major climate zones of the
Earth- tropical, temperate, and polar. Each
zone has a temperature range that relates to
its latitude.
Biome
• Because of the various climates in each zone,
there are different biomes. A biome is a large
region characterized by specific type of climate
and the plants and animals that live there. There
are ten Earth’s Land Biomes: Tundra, Taiga,
Temperate forest, Tropical rain forest, Temperate
grassland, Tropical savanna, Temperate desert,
Tropical desert, Chaparral, and Mountains.
• http://bioactive.mrkirkscience.com/54/swfs/ch54
c1.swf
Tropical zone
• The tropical zone is the warm zone located
around the equator. This zone extends from
the tropic of Cancer to the tropic of Capricorn.
If you didn’t know, latitudes in this zone
receive the most solar radiation.
Temperate Zone
• The temperate zone is the climate zone
between the Tropics and the polar zone.
Temperatures in this zone are very moderate.
• Did you know that this is the zone we happen
to live in?
• If not, you do know 
TIME FOR SOME FUN 
• What is Justin Bieber’s Full Name?
• Justin Drew Bieber
• When did Justin start dating?
• when he was thirteen 
Who is Justin’s future wife?
Brittany  <3
Music Videos for Justin Bieber – Never Let You
Go – Video, listening & stats at Last.fm
Deciduous
• Deciduous happens to be trees that lose their
leaves when the weather becomes very cold.
They tend to be broad- leaved. The soils is
deciduous forest are usually quite fertile
because of the high organic content
contribute by decaying leaves that drop every
winter.
Evergreens
• Evergreens are trees that keep their leaves
year-round. They can be either broad-leaved
or needle-leaved trees, such as a pine trees.
Polar Zone
• The polar zone includes the northernmost and
southernmost climate zones. Polar climates
have the coldest average temperatures. This
zone stays below zero in the winter.
Microclimates
• Microclimates are small regions with unique
climatic characteristics. For example, elevation
can affect an area’s climate and therefore it’s
biome.
Ice Age
• An ice age is a period during which ice collects
in high latitudes and moves toward lower
latitudes. Scientist have found evidence of
many major ice ages throughout the Earth’s
geologic history. The most recent ice age
began about 2 million years ago.
Global warming
• Global warming is a rise in average global
temperatures that can result from an increase
in the green house effect. To understand how
global warming works, you must first learn
about the green house effect.
Greenhouse Effect
• The greenhouse effect is the Earth’s natural
heating process, in which gases in the
atmosphere trap thermal energy. The Earth’s
atmosphere performs the same function as
the glass windows in a car.
Summary
• In our PowerPoint you have learned about
weather is the condition of the atmosphere at
a particular time and place.
• Climate is determined by temperature and
precipitation.
• Climate is controlled by factors such as
latitude, elevation, wind patterns, local
geography, and ocean surface currents.
Continued :
• The amount of solar energy an area receives is
determined by the area’s latitude.
• The seasons are a result of the tilt of the
Earth’s axis and it’s path around the sun.
• The amount of moisture carried by prevailing
winds.
• How elevation increases, temperature
decreases.
Continued:
• The Earth is divided into three climate zones
according to latitude.
• The Tropical zone is the zone around the
equator.
• The temperate zone is the zone between
tropical zone and polar zone.
• The polar zones are the northernmost and
southernmost zones.
Continued:
• If global warming continues, it could
drastically change climates, causing either
floods or drought.
THE END 