The document discusses the layers of the atmosphere and atmospheric phenomena. It explains that the atmosphere is made up of different layers including the troposphere, which is closest to Earth's surface and where weather occurs, and the stratosphere above it, which contains the ozone layer that absorbs ultraviolet radiation from the sun. It defines ozone and ultraviolet radiation. It also defines various atmospheric phenomena such as lightning, thunder, electrical storms, wind, atmospheric pressure, and humidity.

1. Block 4 – Lesson 2

2. What do you think is happening
with the weather in this picture?

3. What do you think is happening
with the weather in this picture?
a) It is a hurricane.
b) It is a tornado.
c) It is a snowstorm.
d) It is an electrical storm.

4. What do you think is happening
with the weather in this picture?
a) It is a hurricane.
b) It is a tornado.
c) It is a snowstorm.
d) It is an electrical storm.

6. The atmosphere is the gaseous layer that covers
the Earth. It is made up of layers with specific
functions according to their temperature, height,
composition and other characteristics.

8. The troposphere is the lowest
layer. It is in contact with the
Earth’s surface. It contains 90% of
all the atmospheric gases and
almost all the water vapor.
It is 7km thick at the poles and
16km thick at the tropics.
All atmospheric phenomena is
generated in this area and it is here
where life on Earth takes place.

9. Above the troposphere is the
stratosphere, where the thin ozone
layer absorbs the ultraviolet
radiation from the Sun.
It is around 50km thick .

10. Above the troposphere is the
stratosphere, where the thin ozone
layer absorbs the ultraviolet
radiation from the Sun.
It is around 50km thick .
What is Ozone?

11. Above the troposphere is the
stratosphere, where the thin ozone
layer absorbs the ultraviolet
radiation from the Sun.
It is around 50km thick .
What is Ozone?
Ozone (O3) is an inorganic molecule.
Its odor is sharp, similar to chlorine. It
can damage respiratory tissues in
animals if breathed directly.

12. Above the troposphere is the
stratosphere, where the thin ozone
layer absorbs the ultraviolet
radiation from the Sun.
It is around 50km thick .
What is Ozone?
Ozone (O3) is an inorganic molecule.
Its odor is sharp, similar to chlorine. It
can damage respiratory tissues in
animals if breathed directly.
What is ultraviolet radiation?

13. Above the troposphere is the
stratosphere, where the thin ozone
layer absorbs the ultraviolet
radiation from the Sun.
It is around 50km thick .
What is Ozone?
Ozone (O3) is an inorganic molecule.
Its odor is sharp, similar to chlorine. It
can damage respiratory tissues in
animals if breathed directly.
What is ultraviolet radiation?
Ultraviolet radiation (also known as
UV radiation or ultraviolet rays) is a
form of energy traveling through
space. Without the ozone layer, the
UV radiation would kill life on Earth.

14. Atmospheric phenomena
Physical events associated with
the atmosphere.

15. Atmospheric phenomena
Physical events associated with
the atmosphere.
Lightning
A flash of electricity
in the clouds. It
occurs between the
ground and the sky.
It is very dangerous

16. Atmospheric phenomena
Physical events associated with
the atmosphere.
Lightning
A flash of electricity
in the clouds. It
occurs between the
ground and the sky.
It is very dangerous
Thunder
It is the shock wave
(sound) that occurs
when lightning
heats the air
suddenly.

17. Atmospheric phenomena
Physical events associated with
the atmosphere.
Lightning
A flash of electricity
in the clouds. It
occurs between the
ground and the sky.
It is very dangerous
Thunder
Electrical Storms
They are events that
generate lightning
and thunder.
It is the shock wave
(sound) that occurs
when lightning
heats the air
suddenly.

18. Atmospheric phenomena
Physical events associated with
the atmosphere.
Lightning
A flash of electricity
in the clouds. It
occurs between the
ground and the sky.
It is very dangerous
Thunder
Electrical Storms
They are events that
generate lightning
and thunder.
Atmospheric Pressure
It is the force the air
has on the Earth’s
surface thanks to
gravity.
It is the shock wave
(sound) that occurs
when lightning
heats the air
suddenly.

19. Atmospheric phenomena
Physical events associated with
the atmosphere.
Lightning
A flash of electricity
in the clouds. It
occurs between the
ground and the sky.
It is very dangerous
Thunder
Electrical Storms
They are events that
generate lightning
and thunder.
Wind happens when a mass
of air is heated and rises.
When the air cools down, it
drops down and moves.
Atmospheric Pressure
It is the force the air
has on the Earth’s
surface thanks to
gravity.
Wind
It is the shock wave
(sound) that occurs
when lightning
heats the air
suddenly.

20. Atmospheric phenomena
Physical events associated with
the atmosphere.
Lightning
A flash of electricity
in the clouds. It
occurs between the
ground and the sky.
It is very dangerous
Thunder
Electrical Storms
They are events that
generate lightning
and thunder.
Atmospheric
Humidity
It is the amount of water
vapor that air contains.
Wind happens when a mass
of air is heated and rises.
When the air cools down, it
drops down and moves.
Atmospheric Pressure
It is the force the air
has on the Earth’s
surface thanks to
gravity.
Wind
It is the shock wave
(sound) that occurs
when lightning
heats the air
suddenly.