Uniqueness of Earth

1. Quarter I - Origin and
Structure of the
Earth (Planet Earth)
EARTH AND LIFE SCIENCE
Prepared by:
SUZANNE D. MENDOZA
SST - II

2. Objectives:
➢ 1. identify the characteristics of the
Earth that supports life; and
➢ 2. expound how the characteristics of
the Earth sustain the needs of a living
organism.
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3. Activity 1: Review
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5. Activity: Now I Know
Directions: Read the story and answer the question below
it.
➢ Have you heard of this before? The Earth, as a planet,
is located in the Goldilocks Zone.
What do you think this means? To have a better
understanding of it, let me share to
you the Story of Goldilocks and the Three Bears!
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6. The Story of Goldilocks and the Three Bears
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7. EARTH AS A HABITABLE PLANET
➢ What makes a planet habitable?
Planet’s habitability, or ableness to harbor life,
results from a complex network of
interactions between the planet itself, the
system it is a part of, and the star it orbits.
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8. 2 Major conditions for a planet to become
habitable.
1. The star should survive long enough for its
planet to develop life.
2. The planet should exist in a region where
water could remain liquid.
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9. ➢ Why are the rest of
the planets
inhabitable?
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10. ➢ Mercury is too close to the sun (its star)
that the energy it receives from the
sun is too much contributing to the
increase in temperature of its
surface.
➢ Mercury's surface temperatures are both
extremely hot and cold.
➢ day temperatures can reach highs of 800°F
(430°C).
➢ night, temperatures can dip as low as -290°F (-
180°C). 10
Mercury

11. Mercury
➢ smallest planet in the Solar System and the closest
to the Sun. It is barely bigger than our Moon.
➢ Its orbit around the Sun takes 87.97 Earth days, the
shortest of all the Sun's planets. One Mercurial day
takes almost 59 Earth days.
➢ Romans named it after their fasted god, Mercury,
who is sometimes also depicted as a quick messenger
with a winged helmet.
➢ without moons
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12. Venus
➢ Venus is too close to the sun,
Receiving too much energy resulting to
the rise of temperature of its
surface. It’s the hottest planet in our solar system, even though
Mercury is closer to the Sun.
Surface temperatures on Venus are about 900 degrees
Fahrenheit (475 degrees Celsius) – hot enough to melt lead.
➢ Venus has lots of active volcanoes, too, that
produce a thick atmosphere that contributes to an
increased greenhouse effect, making the surface
temperature very high.
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13. Venus
➢ Venus is often called "Earth’s twin" because they’re
similar in size and structure, but Venus has extreme
surface heat and a dense, toxic atmosphere.
➢ Venus rotates very slowly on its axis – one day on Venus
lasts 243 Earth days. The planet orbits the Sun faster
than Earth, however, so one year on Venus takes only
about 225 Earth days, making a Venusian day longer than
its year!
➢ without moon 13

14. Mars
➢ has very little volcanic activity.
As a result, it has thin atmosphere
and cold surface temperature.
➢ Mars is the fourth planet from the Sun
– a dusty, cold, desert world with a very thin atmosphere.
➢ One day on Mars takes a little over 24 hours. Mars makes
a complete orbit around the Sun (a year in Martian time)
in 687 Earth days.
➢ Mars has two moons named Phobos and Deimos
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15. ➢ Mercury, Venus, Earth, and Mars are collectively known
as terrestrial planets because they have a compact,
rocky surface like Earth's terra firma (dry land). These
terrestrial planets are the four innermost (closest to
the sun) planets in the solar system and are all made
up of rock and metal.
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16. Jupiter
➢ the largest planet in the solar system
➢ Jupiter's familiar stripes and swirls
are actually cold, windy clouds of
ammonia and water, floating in an
atmosphere of hydrogen and helium.
➢ Jupiter’s iconic Great Red Spot is a giant storm bigger
than Earth that has raged for hundreds of years.
Jupiter rotates once about every 10 hours (a Jovian day),
but takes about 12 Earth years to complete one orbit of the
Sun (a Jovian year). Has 75 moons.
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17. Saturn
➢ second-largest planet in our
solar system.
➢ Adorned with thousands of beautiful
ringlets, Saturn is unique among the planets.
➢ Like fellow gas giant Jupiter, Saturn is a massive ball
made mostly of hydrogen and helium.
➢ Saturn has the most spectacular ring system, with seven
rings and several gaps and divisions between them.
➢ Saturn has 53 known moons with an additional 29 moons
awaiting confirmation of their discovery—that is a total
of 82 moons. 17

18. Uranus
➢ Uranus name after the Greek god of the sky
➢ Uranus is an ice giant. Most of its mass is a
hot, dense fluid of "icy" materials – water, methane and
ammonia – above a small rocky core.
➢ Uranus has 27 known moons
➢ Uranus has 13 known rings.
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19. Neptune
➢ Dark, cold, and whipped by supersonic
winds, ice giant Neptune is the eighth and
most distant planet in our solar system.
➢ Neptune has 14 known moons
➢ Neptune has at least five main rings and four more ring
arcs, which are clumps of dust and debris likely formed
by the gravity of a nearby moon.
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21. Gas Giants
➢ Jupiter, Saturn, Uranus, and Neptune have distances that are
so far from the sun that the energy they receive is very little,
making these planets very cold.
➢ Jupiter, Saturn, Uranus, and Neptune are mainly composed of
gases and so- called Gas giants. As a result, there is no land
where organisms can live. Collectively, they are called Jovian
planets.
➢ Jovian planets pertain to the class of giant planets to which
Jupiter belongs. Jupiter, or Jove, in Roman mythology is the
king of the gods and the god of sky and thunder, equivalent
to Zeus in Greek traditions. 21

22. Earth
➢ The name Earth is at least 1,000 years
old.
Earth is a Germanic word, which simply means “the ground.”
If the Sun were as tall as a typical front door, Earth would
be the size of a nickel (door handle).
Earth is the third planet from the Sun at a distance of about
93 million miles (150 million km). A day on earth is 24 hours.
Earth makes a complete orbit around the sun (a year in
Earth time) in about 365 days. It is a rocky planet with a
solid and dynamic surface of mountains, canyons,
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23. ➢ plains, and more. Most part of our planet is covered with
water.
➢ Earth’s atmosphere is 78% nitrogen (N), 21% oxygen (O),
and 0.9% argon (Ar).
➢ Earth has no ring and has one moon.
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24. Activity 2: Is it Me?
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25. ➢ Answer
1. Venus
2. Mercury
3. Venus
4. Mars
5. Earth
6. Jupiter
7. Saturn
8. Uranus
9. Neptune
10. Earth
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26. Assessment
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