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
LESSON 1
Module 1
ORIGIN AND
STRUCTURE OF THE
EARTH
(The Planet Earth)
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.
How well
you know
our planet
Earth?
What makes
our planet
different
from other
planets?
EARTH: A Habitable
Planet
FACTORS THAT MAKES A PLANET
HABITABLE
1.Temperature
2.Water
3.Atmosphere
4.Energy
5.Nutrients
TEMPERATURE
Ideal temperature to support life is
between -15°C to 115 °C
WATER
Water is essential to all life forms.
ATMOSPHERE
It should have a thick atmosphere to protect life
from harmful rays and foreign objects from
space.
ENERGY
Sun or any chemical energy is used to run
chemical reactions necessary for life.
NUTRIENTS
Chemicals necessary to make proteins and
carbohydrates, organisms cannot grow.
LESSON 2
Module 2
ORIGIN AND
STRUCTURE OF THE
EARTH
(The Subsystem)
EARTH’S SUBSYSTEMS
There are four (4) subsystems:
1. Atmosphere (air)
2. Geosphere (earth/land)
3. Hydrosphere (water)
4. Biosphere (life)
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.
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.
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.
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.
ACTIVITIES
FOR THE WEEK
ACTIVITY 1
MODULE 1 –
PAGE 7
ACTIVITY 2
MODULE 1 –
PAGE 10
ACTIVITY 3
MODULE 2 –
PAGE 7
WEEKLY LESSON
REFLECTION
Give your self-reflection of
what have you learned from
our weekly lesson. (100
words)