The document provides details about a lesson on the structure of the atmosphere, including: 1. The objectives are to identify the five layers of the atmosphere, explain their divisions, and discuss the importance of the atmosphere. 2. The lesson will use a PowerPoint presentation to discuss the layers - troposphere, stratosphere, mesosphere, thermosphere, and exosphere - and their key features. 3. Comprehension questions will assess students' understanding of the layers and atmospheric concepts like weather, climate, composition and the differences between layers.

1. I. Objectives
At the end of the lesson (60 minutes), the students are expected to:
1. Identify and describe the features of the five layers of the atmosphere
2. Explain the basis for the division of the layers of the atmosphere
3. Discus the importance of atmosphere t human kind
II. Subject Matter
1. Topic Name: The Structure of the Atmosphere
2. References: Curriculum Guide, Teacher’s Guide & Internet
III. Materials Needed: Powerpoint Presentation
3. Values Integrated:
4. Strategies: Active Learning and Discussion
IV. Procedure

2. Teacher’s Activity
A. Preliminary Activity
1. Prayer
Everyone please stand. Let us have our
prayer.
Ms. Jana, please lead the prayer.
2. Greetings
Good evening, class!
Please take your seats.
How are you today?
Excellent.
3. Checking of Attendance
Who is absent for today?
Great!
4. Checking of Assignment
May I have your assignments? Pass it
forward quietly.
All papers in?
Assignment: Find a thing that can be
seen at your house and recycle it. Be
creative and craft ideas will do.
5. Review of Past Lesson
Who among you can still recall the lesson
that was discussed last time?
Thank you for being attentive, Noel!
Motivation
Students Activity
Students are praying
Good afternoon, Sir!
We are fine. Thanks for asking.
We have no absence for today.
Students are explaining their output.
Our topic at the last meeting is about
Republic Act 9003. Ecological Solid
Waste Management Act of 2000.

3. To begin with, we are going to play a
game called, “4 Pics 1 Word”. I will show
you a set of pictures and below these
images are disorganized letters which
you will arrange in order to form a word
that represent each pictures.
Presentation
Our topic for today is all about the
“Structure of the Atmosphere”. We will
explore the hidden world of the
atmosphere.
WEATHER VS. CLIMATE
A T M O S P H E R E
T E M P E R A T U R E
The difference between weather and
climate is a measure of time.
Weather is what conditions of the
atmosphere are over a short period
of time, and climate is how the
atmosphere "behaves" over relatively
long periods of time.

4. Weather -It refers to short-term
atmospheric conditions.
Climate - It is the weather of the specific
region averaged over a long period of
time.
As for the introduction, I have here a
short video clip regarding the Structure of
the Atmosphere.
View and take down important facts and
information for I will ask questions later.
Discussion
What is atmosphere?
- Composition of Atmosphere
An atmosphere is the layers of gases
surrounding a planet or other
celestial body. Earth’s atmosphere is
composed of about 78% nitrogen,
21% oxygen, and one percent other
gases.
The Earth's atmosphere is mostly
composed of a mixture of gases
with very tiny quantities of aerosols,
which are solid or liquid particles
suspended in the air. You should
understand that most of the gases in
the atmosphere are nitrogen and
oxygen. These will be referred to as
the major components of the
atmosphere. You should also realize
that more than half of Earth's
atmosphere is composed of nitrogen
(roughly 78%) with comparatively
less oxygen (about 21% of the
atmosphere). The remaining gases
in Earth's atmosphere are called
trace gases because these gases
make up a very small percentage of
the total. By far the most abundant
of these trace gases is argon (close
to 1% of the total).

5. Excellent!
The Earth’s atmosphere is divided into
five layers.
1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere
5. Exosphere
That is right!
Troposphere - The troposphere is
between 5 and 9 miles (8 and 14
kilometers) thick depending on
where you are on Earth. It’s thinnest
at the North and South Pole. This
layer has the air we breathe and the
clouds in the sky.
Stratosphere - The stratosphere is a
layer of Earth’s atmosphere.
The stratosphere is located above
the troposphere and below the
mesosphere.
Mesosphere - The mesosphere lies
between the thermosphere and the
stratosphere. “Meso” means middle,
and this is the highest layer of the
atmosphere in which the gases are
all mixed up rather than being
layered by their mass.
Thermosphere -
The thermosphere lies between the
exosphere and the mesosphere.
“Thermo” means heat, and the
temperature in this layer can reach
up to 4,500 degrees Fahrenheit.
Exosphere - The outermost layer.
The exosphere is the outermost
layer of our atmosphere.“Exo”
means outside and is the same
prefix used to describe insects like
grasshoppers that have a hard shell
or “exoskeleton” on the outside of
their body.

6. Application
We have an activity. Label the five layers
of the atmosphere and identify the things
commonly found in each layer.
Act #2. Negative Effect of Human
Activities in our atmosphere.
Generalization
Five Layers of the Atmosphere
- Imagine our planet without the
atmosphere, what Do you think will
happen?
-How can you help to protect our
atmosphere?
Evaluation
Direction: Choose the letter of the correct
The depletion of atmosphere
would not only be fatal to humans
but also to most of the plants and
animals out on the planet.
We can take public transportation,
ride a bike, or walk whenever
possible.
C

7. answer.
1. A device that is used to measure
atmospheric pressure is a _____.
A. Barometer
B. Thermometer
C. Kilometer
D. Micrometer
2. A rise in air pressure (high pressure)
usually indicates _____.
A. Heavy Snows
B. Rainy Conditions
C. Fair Weather
D. Typhoon
3. What is the best definition of air?
A. It is around us
B. A mixture of any gases
C. Oxygen
D. Human Resources
4. The column of air above you is called
_____.
A. Elevation
B. Altitude
C. Heat
D. Air Pressure
5. What makes up less than 1% of the
atmosphere?
A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Water vapor and other gases
6. What layer does most weather occur
A. Barometer
A. Heavy Snows
B.
D. Air Pressure
D
C

8. in?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
7. What gas makes up around 21% of our
atmosphere?
A. Methane
B. Nitrogen
C. Oxygen
D. Carbon Dioxide
8. What is the third atmospheric layer
from the ground?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
9. What layer has the ozone layer in it?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
10. What happens to temperature as you
go higher in the troposphere?
A. It gets hotter
B. It gets colder
C. It stays the same
D. It is always changing
11. What is the atmospheric layer closest
to the ground?
A. Thermosphere
C
D
B
B
C

9. B. Stratosphere
C. Troposphere
D. Mesosphere
12. What layer do weather balloons reach
before they burst?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
13. At what layer do most airplanes fly at
the top of?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
14. What layer of the atmosphere has the
aurora borealis in it?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
15. What is the atmosphere?
A. A layer of fluids surrounding an object
B. A layer of gas surrounding a planet or
moon
C. A cloud of gas that allows us to
breathe
D. Harmful layer of gas
16. What atmospheric layer has most of
the clouds?
A. Thermosphere
B. Stratosphere
B
C
A
B
C

10. C. Troposphere
D. Mesosphere
17. What is the coldest layer in the
atmosphere?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere
18. What does ozone layer do?
A. It protects us from meteors
B. It protects us from ultra violet radiation
C. It protects us from violent solar flares
D. It helps us breathe
19. What is the most common gas in the
atmosphere?
A. Oxygen
B. Carbon Dioxide
C. Nitrogen
D. Methane
20. What is the fourth atmospheric layer
from the ground?
A. Thermosphere
B. Mesosphere
C. Troposphere
D. Stratosphere
Assignment
Write a letter to your 10 year old self.
Describe our planet today.
Goodbye, class!
D
B
C
A
Goodbye!

11. Preparedby : Pelagio,JoshuaL.
BSED Science IV-B