dhanyadas

1. Name of the teacher : Dhanya Das.Y Std : VIII.G
Name of the School : New H.S.S. Nellimoodu Str : 40
Subject : Social Science Dur : 45 mts
Unit : In search of Earth’s Secrets Date : 10/09/15
Sub Unit : Layers of Earth
Curricular Statement : Analyse different layers of earth.
Facts :
 The Earth has been devided into three different layers
1. Crust 2. Mantle 3. Core
 Crust is the Comparatively thin outer shell of the Earth
 Approximately 40 km thick.
 Two parts – Continental crust, oceamic crust.
 As silica and alumina are the chief contents, the continental crust is also known as SIAL
 As silica and magnesium are the chief contents, the oceamic crust is also known as SIMA
 Mantle is located beneath the crust
 It has two parts upper mantle and lower mantle

2.  The third layer of earth was core it is the central part of the earth.
 It has two parts outer core and inner core.
Concept : Different layers of earth.
Learning : 1. To understand about the different layers of earth.
Outcome : 2. To identify different parts of layers
3. To find out the chief contents to the part of layers
Pre- requiste : The students have basic idea about different layers of earth.
Teaching laarning materials : Power point presentation
Classroom Interaction proceedure
Introduction
1) Which is our home planet
2) What are the different layers of Earth
With these questions teacher enters in to the topic. Today we
are going to discuss about the topic. “Layers of Earth.”
B.B
Layers of Earth
Presentation
Activity – 1
Pupil Response

3. Do you know the different layers of Earth and what are the main
feachers.
Slide - 1
By Showing the first slide teacher introduces the topic layers of earth
and explains the content.
Activity – 2
Then teacher asks do you know about the different layers of earth.
Teacher shows the slide.
Slide –II
Layers of Earth
1. Crust
2. Mantle
3. Core

4. By showing the slide teacher explains about the three layers
of Earth.
Activity – 3
Slide –III
Crust
 The comparatively thin outer shell of the Earth
 Approximately 40 km thick
 Two parts – continental crust, oceanic crust
Slide –IV
Mantle
 Located beneath the crust
 Extendsup to 2900 km from the crust
 Two parts – upper mantle, lower mantle.

5. Slide –V
Core
 Central part of the earth
 From 2900 km to 6371 km
 Two parts – outer core – inner core
After showing the last slide the teacher explains that all
layers of earth and its parts. The teacher repeats all points once more.
Review
1) Which are the three layears of earth ?
2) Which is the outer layer of the earth ?
3) Which are the two parts of crust ?
4) What are the features of mantle ?
5) Which is the central part of earth ?
6) What are the two parts of core ?
Follow – up – Activity
Prepare a note on the features of the interior of earth ?