EARTH’S EARTH’S ATMOSPHEREATMOSPHERE

Composition of the AtmosphereComposition of the Atmosphere

Oxygen= __________Oxygen= __________ Nitrogen = ________Nitrogen = ________ Other gases = ________Other gases = ________

– argon., carbon dioxide, methane, helium, argon., carbon dioxide, methane, helium, etc.etc.

Layers of the AtmosphereLayers of the Atmosphere

The atmosphere is divided into ____ layers.The atmosphere is divided into ____ layers.

Layers in the AtmosphereLayers in the Atmosphere

http://earthguide.ucsd.edu/earthguide/diagrams/atmosphere/index.html

Layers of the AtmosphereLayers of the Atmosphere

4 Layers are:4 Layers are:–1. 1. Troposphere:Troposphere:

Closest to groundClosest to groundAll weather occurs hereAll weather occurs hereAs altitude goes up, temperature goes As altitude goes up, temperature goes

__________

Layers of the AtmosphereLayers of the Atmosphere

–2. 2. StratosphereStratosphereOzone “layer” is located hereOzone “layer” is located hereJets fly thereJets fly thereAs altitude goes up, temperature goes As altitude goes up, temperature goes

__________

Layers of the AtmosphereLayers of the Atmosphere

–3. 3. Mesosphere:Mesosphere:Coldest layerColdest layerAs altitude goes up, temperature goes As altitude goes up, temperature goes

__________

Layers of the AtmosphereLayers of the Atmosphere

–4. 4. ThermosphereThermosphereDivided into 2 parts:Divided into 2 parts:

– Ionosphere and ExosphereIonosphere and Exosphere Aurora borealis happens in ionosphereAurora borealis happens in ionosphere Exosphere is considered “outer space”Exosphere is considered “outer space”

As altitude goes up, temperature goes As altitude goes up, temperature goes __________

Do you understand this stuff?Do you understand this stuff? Name the 4 layers of the atmosphere.Name the 4 layers of the atmosphere. Describe the chemical composition of the Describe the chemical composition of the

troposphere.troposphere. What causes the temperature to increase in What causes the temperature to increase in

the Stratosphere?the Stratosphere? What causes the temperature to decrease in What causes the temperature to decrease in

the Mesosphere?the Mesosphere? Where does weather occur?Where does weather occur? Describe the chemical composition of the Describe the chemical composition of the

mesosphere.mesosphere.

What is the temperature in the What is the temperature in the troposphere at 5 km?troposphere at 5 km?

-30 C

-20 C 0 C

-60 C

No cl

ue

0% 0% 0%0%0%

A.A. -30 C-30 C

B.B. -20 C-20 C

C.C. 0 C0 C

D.D. -60 C-60 C

E.E. No clueNo clue

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32

What is the temperature at 60 What is the temperature at 60 km?km?

-20 C

-45 C

-10 C 0 C

0% 0%0%0%

a.a. -20 C-20 C

b.b. -45 C-45 C

c.c. -10 C-10 C

d.d. 0 C0 C

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32

Which layer goes from 50 km to Which layer goes from 50 km to 85 km?85 km?

Strato

sphere

Meso

sphere

Thermosp

here

Troposp

here

0% 0%0%0%

A.A. StratosphereStratosphere

B.B. MesosphereMesosphere

C.C. ThermosphereThermosphere

D.D. TroposphereTroposphere

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32

Which is the coldest layer?Which is the coldest layer?

Troposp

here

Strato

sphere

Meso

sphere

Thermosp

here

0% 0%0%0%

A.A. TroposphereTroposphere

B.B. StratosphereStratosphere

C.C. MesosphereMesosphere

D.D. ThermosphereThermosphere

What criterion determines when What criterion determines when each layer starts and stops?each layer starts and stops?

Temperatu

re

Altitu

de Color

Composition

Pretti

ness

0% 0% 0%0%0%

A.A. TemperatureTemperature

B.B. AltitudeAltitude

C.C. ColorColor

D.D. CompositionComposition

E.E. PrettinessPrettiness

As altitude increases, density As altitude increases, density ________________

Goes u

p

Goes d

own

Stays

the sa

me ID

K

0% 0%0%0%

A.A. Goes upGoes up

B.B. Goes downGoes down

C.C. Stays the sameStays the same

D.D. IDKIDK