Download EARTH`S ATMOSPHERE

NAME
DATE
CLASS
GUIDE
STUDY
Air
Use the words in the box to fiII in the blanks.
EARTH'S
ATMOSPHERE
9:1 Composition
of theAtmosphere
oxygen
ozone
nitrogen
water vapor
atmosphere
plant nutrient
Earth is protected by a blanket of air called the
: Earth's atmosphere is made of many
gases. The two most abundant gases in dry air are J
is an imporbant
/:lqy'ifi.e':S
photosynthesis
and
..l''93er4
. Nitrogen
. Oxygen is produced by plants during
r'"Lie';lflt,'.l_
and is usedby plants and animals.Carbon dioxide rrr4 ,"r'l*r
Ja{vclA'zctttehelp prevent heat loss from Earth .
I
in Earth's atmosphere that absorbs ultraviolet radiation.
is a form of oxygen iocated high
9=2 Structure
of the Atmosphere
tropopause
ozone
stratosphere
ionosphere
exosphere
mesosphere
stratosphere
exosphere
troposphere
mesosphere
w
i ft,
. 9tin'lo?tse
The four layers of the atmosphere are the l
of the gases of the atmosphere. Temperature
Jecrle-.rs€l
boundary at the top of the troposphere is called the
In this
I
lie just
ni <cz
is
d.ecreases with
electrically
charged
hoigl'rt
and is
extends out to interplanetary
below it.
The
in this zone, and it also
layer. The coldest layer is 111s ,n*r,yol*t+
layer, temperature
ia tw<fhe-{'E-
It acts as a ceiling to the weather
:#eu+-E
Iies above the tropopause. Temperatures
o'bttL
ne:pYltW.a''fl
with height in the troposphere. The
'L*f.fidge-.
zone, and strong winds called
contains L}re
jet streams
Van Allen
thermosphere
ionosphere
troposhere
height
decreases
rise
thermosphere
, above the stratosphere.
The outermost layer is the
useful
for
radio
communications. The
space and includes the
L/er*l
Belts, which are concentrated radiation layers of solar wind particles.
NAME
DATE
CLASS
STUDY
GUIDE
Weotherond Climote
Use words in the box to fi.II in the blanks.
WHATIS WEATHER?
10:1 Factorsof Weather
dew
more
cool
frost
weather
wind
humidity
condense
dew point
low pressure
relative humidity
high pressure
Conditions of the atmosphere relating to air pressure, wind, temperature, and moisture are referred. to
as
u/€dlYhef
. Air molecules move closer together in
ar*l
denser, sinks, and forms an area of
of high pressure to areas of
difference in density is
. Air will move from areas
lnt t
ur)*l
air. Cool air becomes
. Movement of air because of this
. Temperature
of the air affects not only density but also
the moisture heid in the atmosphere. In warm air, the molecules are farther apar6;
t}a:os,
{rlbrP
. t.t
rdty
moisture can be held than in an equal volume of cool si7.
Kel€*'ue-
is a measure of the amount of moisture air can hold at a given temperature. When
the relative humidity reaches 100 percent, water vapor in the air may
. The temperature
t i/".u
at which this occurs in called th
. The condensing moisture forms
f
"
l'
dei,tl
u,
{rl.rf
, or if the air temperature is below freezing, it forms
^,