This document provides an overview of Earth and life science modules 1 and 2, which cover the origin and structure of Earth. Module 1 discusses Earth's history, structure, composition and processes. It also covers natural hazards. Module 2 examines Earth's four subsystems: the atmosphere, geosphere, hydrosphere and biosphere. Key details are provided on the role and composition of each subsystem and how they support life. The document concludes with activities for students to complete related to modules 1 and 2.

1. EARTH &
LIFE
SCIENCE
Module 1 & 2
ORIGIN AND STRUCTURE OF
EARTH
(The Planet Earth & It’s Subsystem)
Prepared By:
EUGENE BERT D. SANTIAGO
Special Science Teacher I | Subject Teacher

2. LESSON 1
Module 1
ORIGIN AND STRUCTURE OF
THE EARTH
(The Planet Earth)

3. EARTH & LIFE SCIENCE
It presents the history of the Earth through
geologic time. It discusses the Earth's
structure, composition, and processes.
Issues, concerns, and problems pertaining
to natural hazards are also included. It
also deals with the basic principles and
processes in the study of biology.

4. How well
you know
our planet
Earth?

5. What makes
our planet
different
from other
planets?

6. EARTH: A Habitable Planet

7. FACTORS THAT MAKES A PLANET HABITABLE
1.Temperature
2.Water
3.Atmosphere
4.Energy
5.Nutrients

8. TEMPERATURE
Ideal temperature to support life is between -
15°C to 115 °C

9. WATER
Water is essential to all life forms.

10. ATMOSPHERE
It should have a thick atmosphere to protect life from
harmful rays and foreign objects from space.

11. ENERGY
Sun or any chemical energy is used to run chemical
reactions necessary for life.

12. NUTRIENTS
Chemicals necessary to make proteins and
carbohydrates, organisms cannot grow.

13. LESSON 2
Module 2
ORIGIN AND STRUCTURE OF
THE EARTH
(The Subsystem)

14. EARTH’S SUBSYSTEMS
There are four (4) subsystems:
1. Atmosphere (air)
2. Geosphere (earth/land)
3. Hydrosphere (water)
4. Biosphere (life)

15. ATMOSPHERE
It is the gaseous layer above the Earth’s surface, primarily
composed of 78% nitrogen and 21% oxygen. Other gases
like argon, carbon dioxide, carbon monoxide, ozone, and
other inert gases made the remaining 1%.
It supports life by providing OXYGEN for animals and
CARBON DIOXIDE for plants.
It also supports life indirectly by regulating climate.
It serves as a blanket for harmful radiation during the day
and keeps the earth warm during the night.

16. GEOSPHERE
The geosphere includes all the rocks that make up Earth,
from the partially melted rock under the crust, to ancient,
towering mountains, to grains of sand on a beach.
It includes the core, mantle, and crust of the Earth.
It also provides a habitat for different life forms.

17. HYDROSPHERE
The hydrosphere includes water that is on the surface of
the planet, underground, and in the air.
A planet's hydrosphere can be liquid, vapor, or ice.
Just like the geosphere, it also provides a habitat for
different life forms.

18. BIOSPHERE
The biosphere is made up of the parts of Earth where life
exists.
The biosphere extends from the deepest root systems of
trees, to the dark environment of ocean trenches, to lush
rain forests and high mountaintops.
Since life exists on the ground, in the air, and in the water,
the biosphere overlaps all these spheres.

19. ACTIVITIES
FOR THE WEEK

20. ACTIVITY 1 MODULE 1 – PAGE
7

21. MODULE 1 – PAGE
10
ACTIVITY 2

22. ACTIVITY 3
MODULE 2 – PAGE
7

23. WEEKLY LESSON REFLECTION
Give your self-reflection of what
have you learned from our
weekly lesson. (100 words)