Lesson Notes By Weeks and Term - Senior Secondary 1

The Earth Structure 1

Get it on Google Play
Get it on the Apple App Store
  1. Home
  2. Lesson Notes By Weeks and Term
  3. Senior Secondary 1
  4. The Earth Structure 1

TERM – 1ST TERM

WEEK SIX

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Geography

Topic: The Earth Structure 1

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Identify the major spheres of the earth.
  2. Described the component layers of the earth.
  3. Highlight the characteristics and importance of each layer of the outer
  4. Examine the relationship between the layers of the earth

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher identify and discuss the major spheres of the earth

Students as a whole, identify the outer and internal structures of the earth.

STEP 2

EXPLANATION

Teacher explain the components layers of the earth and the relationship between layers of the earth

Students in small groups explain the four major layers of the earth (lithosphere, hydrosphere, atmosphere and biosphere) and describe the main characteristics of each layer of the earth

 

STEP 3

DEMONSTRATIO

N

Teacher highlight and explain the characteristics and importance of layers of the earth

Students in pairs discuss the importance of each layer of the outer structure of the earth and examine the relationship between the layers of the outer structure of the earth

 

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

 

The students

copy the note in

their books

 

NOTE

THE EARTH'S STRUCTURE 1

The major spheres of the Earth

The earth is subdivided in to four major spheres, these includes, the geosphere(lithosphere), the hydrosphere, the atmosphere and the biosphere.

Each of these spheres are very essential especially towards the sustainability of life.

Characteristics and importance of Earth spheres

The following are characteristics and importance of each Earth sphere:

1. Geosphere: This sphere comprises the solid parts of the Earth, including the rocks, minerals, and soil. It forms the planet's foundation, providing the surface on which life exists.

 Importance of geosphere

  1. The geosphere forms the planet's foundation.
  2. It prrovides habitats for various life forms.
  3. It serves as a source of valuable resources like minerals.

2. Hydrosphere: The hydrosphere encompasses all the water on Earth, including oceans, rivers, lakes, groundwater, and atmospheric water vapor. Water is vital for various life processes and plays a crucial role in shaping the Earth's surface through erosion and deposition.

Importance of hydrophere

  1. The hydrosphere is essential for life.
  2. It's regulates climate.
  3. It's influences weather patterns.
  4. It's plays a crucial role in shaping the Earth's surface through erosion and deposition.

3. Atmosphere: Earth's atmosphere is a layer of gases that surrounds the planet. It consists mainly of nitrogen, oxygen, carbon dioxide, and trace gases. The atmosphere provides the air we breathe, protects us from the sun's harmful radiation, and influences weather and climate patterns.

 Importance of atmosphere

  1. The Earth's atmosphere provides the air we breathe.
  2. It's protects the planet from harmful solar radiation.
  3. It's plays a key role in regulating temperature and weather patterns.

Biosphere: This sphere encompasses all living organisms on Earth, from microscopic bacteria to large animals and plants. Life interacts with the other spheres, influencing and being influenced by the geosphere, hydrosphere, and atmosphere. The biosphere is crucial for maintaining the planet's ecological balance..

Importance:

  1. The earth biosphere sustains life.
  2. It's facilitates ecological interactions.
  3. It's influences climate.
  4. It's plays a role in biogeochemical cycles.

The relationship between the Earth spheres

The Earth's lithosphere, biosphere, atmosphere, and hydrosphere are interconnected components of the Earth system. The lithosphere includes the solid outer layer of the Earth, consisting of the crust and uppermost part of the mantle. The biosphere encompasses all living organisms on Earth. The atmosphere is the layer of gases surrounding the planet, and the hydrosphere involves all water bodies.

Interactions occur among these spheres. For example, the lithosphere influences the biosphere by providing a substrate for life and shaping landscapes. The atmosphere plays a crucial role in supporting life by providing oxygen and regulating temperature. The hydrosphere is essential for various life forms and affects climate patterns. Changes in one sphere can have cascading effects on the others, highlighting the interconnected nature of Earth's systems.

EVALUATION: 1. Discuss 2 importance each of the four layers of the earth.

  1. Discuss the relationship between the Earth spheres

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively