1. Name of the Teacher: PRATHIBHA.S.P
Name of the school: New Higher Secondary school Time:45
Unit : Our Atmosphere STD: IX
Sub unit : Interior of the earth.
Curricular statement: Give an idea about the interior of the earth.
Learning outcome : 1.students get an idea about the structure of an
Interior of the earth.
2.Students could make a comparison of different
Of different layers of the earth.
3.students gets an idea about the peculiarities of
The lithosphere.
Content Analysis :
Terms: lithosphere,layers,crust,core,mantle,plates.
Facts: 1. The radius of the earth is about 6371 km.
2. The outer most layer of the earth is called
Crust.
3. The upper portion of the mantle and crust
Together called lithosphere.
4. lithosphere consist of 7 major plates and 12
2. Concept : The upper portion of the mantle and crust together
Called the lithosphere.
Pre-requisites: students have an idea about the interior of the earth.
Teaching _ 1. Flash cards indicating different layers of the earth.
Learning 2. Power point presentation.
Resources :
Classroom interaction procedure Expected pupil
response.
Introduction:
*Do you know what is the shape of the earth?
*Which is the only planent where the living
things exist?
*Do you have any idea about the structure of the
earth?
{By asking these questions teachers enters the class.}
Presentation
Today we have to discus about the interior of the
earth.
Activity:1
Do you know what is the distance between the center
of the earth to its surface?
Yes it is the about 6371 km. we can divide the interior
of the earth into many layers. This is shown in the
power point presentation.
3. Slide-1
INTERIOR OF THE EARTH
By showing the first slide the teacher
introduced the lesson. Then moving to the next slide.
Slide-2
INTERIOR OF THE EARTH STRUCTURE
Crust
outercore mantle
inner core
By showing the second slide
the teacher explains the different layers of the
earth. And then asked to the students to write a
brief note about the interior of the earth. For
this teacher divide the class into 4 groups.
4. slide-3
DEPTH OF DIFFERENT LAYERS OF THE EARTH.
N0 LAYER DEPTH IN KM AVEREGE
DENSITY
A Crust 0-40 km 2.9
B Mantle 40-2900 km 4.5
C Outer core 2900-5150 km 10.7
D Inner core 5151-6371 km 15
By showing this slide teacher
explains the approximate development of the
different layers of the earth. After showing the
slide the teacher asked to write a short note
after observing the table.
Slide-4
SIAL AND SIMA
THE OUTER MOST LAYER OF THE EARTH IS THE
CRUST. THE ROCKS CONTAINS THE MINERAL LIKE
SILICA AND ALUMINIA MAKE UP THE CONTENENTS
AND ROCKS CONTAINING SILICA AND MAGNISIUM
MAKE UP THE OCEN FLOORS; THESE TOGTHER
KNOWN AS SIAL AND SIMA.
By showing this slide the teacher explains the
meaning of the term sial and sima. Then moves
5. on the next slide,, interior of the earth in
details.
6. Slide-5
INTERIOR OF THE EARTH
i. The outer most layer of the earth is the crust.
ii. The upper portion of the earth and mantle
are called lithosphere.
iii. Lithosphere consist of 7 major plates and12
minor plates.
iv. Then the last layer is the core: outer and the
inner core.
After showing the last slide the
teacher repeats all the points once more. Here
teacher use the flash cards. By this way the teacher
concludes the topic.
7. REVIEW
What are the different layers of the earth?
What is Lithosphere?
Write a short note about the sial and sima?
What is Nife?
FOLLOW UP ACTIVITY
Draw the interior structure of the earth and
prepare a short note about the interior of the
earth structure?
