Do Now: We all know that we cannot live on

other planets, but why? What makes Earth so

unique that we can live on it?

Do Now: We all know that we cannot live on

other planets, but why? What makes Earth so

unique that we can live on it?

Pre-Assessment Pre-Assessment

1. How does weather affect soil?

2. How does weather affect you?

3. What is the difference between weather and climate?

4. What are the layers of the atmosphere?

1. How does weather affect soil?

2. How does weather affect you?

3. What is the difference between weather and climate?

4. What are the layers of the atmosphere?

Aim: How does our atmoshere impact our climate and weather?

Aim: How does our atmoshere impact our climate and weather?

Previously…Previously…

We discussed Earth’s internal structure & function as well as Earth’s soil formation and

the importance of not degrading this natural

resource.Now we will discuss the outer layers of Earth and how they

help keep us safe!

We discussed Earth’s internal structure & function as well as Earth’s soil formation and

the importance of not degrading this natural

resource.Now we will discuss the outer layers of Earth and how they

help keep us safe!

Composition of the Atmosphere:

Composition of the Atmosphere:

Has changed a lot over 4.6 billion years.

Started from gases emitted from volcanoes.

Oxygen began accumulating 2.5 billion years ago.

Has changed a lot over 4.6 billion years.

Started from gases emitted from volcanoes.

Oxygen began accumulating 2.5 billion years ago.

Composition of AirComposition of Air

Nitrogen and Oxygen most abundant.

Varies from time to time and place to place.

Ex: rush hour and near factories and airports.

Nitrogen and Oxygen most abundant.

Varies from time to time and place to place.

Ex: rush hour and near factories and airports.

Our AtmosphereOur Atmosphere

is a layer of gases held close to the earth by the force of gravity.

FYI: The farther you are from the center of Earth, the weaker gravity’s force is on you

is a layer of gases held close to the earth by the force of gravity.

FYI: The farther you are from the center of Earth, the weaker gravity’s force is on you

Layers of the atmosphere

Layers of the atmosphere

There are 4 layers in the atmosphere

They are the troposphere, mesosphere, thermosphere, and stratosphere

There are 4 layers in the atmosphere

They are the troposphere, mesosphere, thermosphere, and stratosphere

QuestionQuestion

Why do you think the

temperature falls and rises twice, going

from lower to higher

altitudes?

Why do you think the

temperature falls and rises twice, going

from lower to higher

altitudes?

TroposphereTroposphere10-20 km (5-10 miles up)Where all the weather we experience

occursContains most of the atmospheric

water vapor & cloudsLocation of greenhouse gases which

trap (absorb) radiation from the sun warming our surface

Becomes colder with an increase in altitude

10-20 km (5-10 miles up)Where all the weather we experience

occursContains most of the atmospheric

water vapor & cloudsLocation of greenhouse gases which

trap (absorb) radiation from the sun warming our surface

Becomes colder with an increase in altitude

Composition of the Atmosphere: ESRT

Composition of the Atmosphere: ESRT

All other gasses: CO2, Ar, Methane etc

Troposphere CompositionTroposphere Composition

78% N2

20% O2

Less than 2%Water vapor (0.1-4%)Argon gas (1%)Carbon Dioxide

(0.04%)Trace gases

78% N2

20% O2

Less than 2%Water vapor (0.1-4%)Argon gas (1%)Carbon Dioxide

(0.04%)Trace gases

Pause…Pause…

Why do you think most of the planets air is in the troposphere?

Why do you think most of the planets air is in the troposphere?

StratosphereStratosphere

contains the Ozone Shield 17–26 km (10–16 mi) above sea level resulting in temp. increasing with height

no precipitation

contains the Ozone Shield 17–26 km (10–16 mi) above sea level resulting in temp. increasing with height

no precipitation

Ozone layer/shieldOzone layer/shield

Ozone (O3) absorbs most of the UV radiation from the sun and filters its rays

This UV absorbtion causes it to heat up the part of the stratophere that’s closer to the sun (farthest from Earth)

Ozone (O3) absorbs most of the UV radiation from the sun and filters its rays

This UV absorbtion causes it to heat up the part of the stratophere that’s closer to the sun (farthest from Earth)

MesosphereMesosphere

Extends about 80km above Earth’s surface

Area where meteors are usually burnt up

Extends about 80km above Earth’s surface

Area where meteors are usually burnt up

Thermosphere(Ionosphere)Thermosphere

(Ionosphere)

is the thinnest gas layer located 110km above Earth

Space shuttle orbits hereFYI: Called ionosphere b/c

of ionization that takes placeabsorbs the solar wind

(energetic photons from the sun)

Ex: Aurora Borealis

reflects long distance radio waves making long distance radio communication possible

is the thinnest gas layer located 110km above Earth

Space shuttle orbits hereFYI: Called ionosphere b/c

of ionization that takes placeabsorbs the solar wind

(energetic photons from the sun)

Ex: Aurora Borealis

reflects long distance radio waves making long distance radio communication possible

Frequency Waves Passing Through the

Atmosphere

Frequency Waves Passing Through the

Atmosphere

The aurora borealis occurs in which of the following parts of

the atmosphere?

The aurora borealis occurs in which of the following parts of

the atmosphere?A.TroposphereB.ThermosphereC.MesosphereD.HydrosphereE.Stratosphere

A.TroposphereB.ThermosphereC.MesosphereD.HydrosphereE.Stratosphere

B Thermosphere (ionosphere)

B Thermosphere (ionosphere)

Which of the following are the two most important factors in

determining a habitat’s climate?

Which of the following are the two most important factors in

determining a habitat’s climate?A.Temperature/wind speedB.Wind direction/precipitationC.Wind speed/rate of

evaporationD.Rate of

evaporation/temperatureE.Temperature/precipitation

A.Temperature/wind speedB.Wind direction/precipitationC.Wind speed/rate of

evaporationD.Rate of

evaporation/temperatureE.Temperature/precipitation

E) Average Temperature & Average Precipitation

E) Average Temperature & Average Precipitation

The atmosphere is warmed as gases such as water vapor and

carbon dioxide absorb the infared heat radiated from the

earth. This process is best described as

The atmosphere is warmed as gases such as water vapor and

carbon dioxide absorb the infared heat radiated from the

earth. This process is best described asA. Ozone depletion

B. The green house effect

C. BiomagnificationD. IonizationE. Convection

A. Ozone depletionB. The green house

effectC. BiomagnificationD. IonizationE. Convection

B= As the sun’s light passes through the atmosphere it strikes the solid earth. The earth with its soil, water, buildings, asphalt and concrete absorb this radiant energy. This energy is then radiated back into the atmosphere as infrared radiation. This radiation can be reflected back into the atmosphere (the greenhouse effect) or pass back into space

B= As the sun’s light passes through the atmosphere it strikes the solid earth. The earth with its soil, water, buildings, asphalt and concrete absorb this radiant energy. This energy is then radiated back into the atmosphere as infrared radiation. This radiation can be reflected back into the atmosphere (the greenhouse effect) or pass back into space

SummarySummary

How do we impact the atmosphere? Positive and/or negative impacts.

How do we impact the atmosphere? Positive and/or negative impacts.