AtmosphereEarth’s

Earth’s atmosphere Earth’s atmosphere is a layer of gases surrounding the planet. The Earth is surrounded by a blanket of air, which we call the atmosphere.

Atmosphere:

Absorbs the energy from the Sun protects us from high-energy radiation The atmosphere protects and supports life. It burns incoming meteoroids.

Blue layer is an atmosphere

Atmosphere act as a blanket to our earth

Orange explains

how

atmosphere

protect the

earth

Earth’s atmosphere Earth’s atmosphere is made of a mixture of gases called

air. Nitrogen gas makes up about 78% of Earth’s

atmosphere.

The second most abundant gas is oxygen, which makes up 21% of Earth’s atmosphere.

The third Argon (Ar, 0.9%).

Carbon Dioxide (CO2, 0.03%).

Lets Understand It With Pizza

Layers of Atmosphere The atmosphere has four layers

Thermosphere

Mesosphere

Stratosphere

Troposphere

Troposphere Lowest and thinnest layer

17 km at equator, 7 km at poles

90% of the atmosphere’s mass

Temperature decreases with altitude 6°C per kilometer Top of troposphere averages –50°C

Where weather occurs Air is warmest at the bottom of the troposphere near ground level. Higher

up it gets colder

Boundary between the troposphere, and the stratosphere is called the tropopause

View of troposphere layer from an airplane's window.

AEROPLANES Fly on Troposphere layer

Stratosphere Extends from 10 km to 50 km

Above the ground

Here UV radiation are absorted

Temperature increases with altitude

Almost no weather occurrence

No air mixing in this layer.

Contains high level of ozone Ozone layer

Upper boundary is called stratopause

temp which change slowly in stratosphere.

Stop changing here

Air balloon can go

upto Stratosphere

layer

Stratosphere

Troposphere

Mesosphere COLDEST Extends to almost 80-85 km high

Meteoroids get burn in this layer

Most coldest layer(-100)C

Temperature decreases as altitude increases.

The boundary between the mesosphere and the next upper layer is called mesopause.

Thermosphere Above the mesosphere and extends to almost 500

km high

Hottest layer

Temperature increases with altitude.

The upper Thermosphere is called the Ionosphere; it extends from 80 to 550 km above the Earth's surface.

Ionosphere absorb radiation from the sun and

become electrically charged.

Electrically charged particles are called ions, hence the name: the Ionosphere.

Readily absorbs solar radiation

Temperature can go as high as 1,500C

Reflects radio waves. International space station are present in this layer.

Found In THERMOSHERE Layer

INTERNATIONAL SPACE STATION

AURORAS• An aurora is a natural light display in the sky, usually of greenish color but sometimes

red or blue.

• This natural phenomenon usually occurs in areas known as the 'auroral zone' near the poles of the in the north & in the south.

• Aurora is caused by the collision of energetically charged particles with atoms in the high altitude thermosphere within our atmosphere.

• The Sun contain particles which gets pulled into the Earth's magnetic pole fields.

• As they accelerate towards the Earth, collisions occur between these ion particles and nitrogen and oxygen atoms in our atmosphere, releasing energy in the form of amazing aurora lights

Layers of

Atmosphere

BLAH BLAH

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Layers of the Atmosphere

The four layers of the atmosphere include:

1. the troposphere, where we live;

2. the stratosphere, which contains the ozone layer;

3. the mesosphere, where meteors burn; and

4. the thermosphere, where satellites orbit Earth.