GRADE-11-EARTH-AND-LIFE-(SCIENCE)-1ST-SEM-1ST-QUARTER

The origin and structure of the Planet earth

1. EARTH AND LIFE SCIENCE
Ms. EdelynMalhacan
Subject teacher

4. Objectives:
•Identify the characteristics of the earth
that supports life; and
•Expound how the characteristics of the
Earth sustain the needs of living organism.

6. Key questions:
•What are the characteristics of the
earth that enable it to support life?
•How the characteristics sustain the
needs of living organisms?

7. MERCURY
VENUS
EARTH
MARS
JUPITER
SATURN
URANUS
NEPTUNE

8. Why earth is called
“LIVING PLANETS?”

9. Characteristics of Earth
✓ only planet that harbor life
✓located in the habitable
zone

10. Characteristics of Earth
✓has molten nickel-iron outer
core which give rise magnetic
field to an extensive
✓has an atmosphere that
shields us from harmful
radiation from the sun

11. Factors that make a planet habitable
✓Temperature
✓Atmosphere
✓Energy
✓Nutrients

12. (1)TEMPERATURE
-influences how
quickly atoms and
molecules move.

13. Not enough of
the factor
Just rightToo much of
the factor
Situation in
the Solar
System
•Low temp.
= slow
reaction
(chemical)
•Low temp.
= frozen
water, thus,
no liquid
water
•-15 ºC to
115 ºC life
thrives
and liquid
water
exists.
•at 125 ºC,
proteins,
carbohydrates,
& DNA/RNA
start to break
apart
•High temp=
water
evaporates
faster
•Only
Earth’s
surface is in
the
temperatur
e range.

14. (2)ATMOSPHERE

15. Not enough of
the factor
Just rightToo much of
the factor
Situation in
the Solar
System
•Small
planets or
moons have
insufficient
gravity to
hold an
atmosphere
•Earth &
Venus are
the right
size to hold
sufficient
atmosphere
•Venus’
atmospher
e in 100x
thicker
than ours.
•Earths,
Venus &
Titan have
significant
atmospheres
• Mars’
atmosphere
is just 1%
compared to
ours.

16. ENERGY

17. Not enough of
the factor
Just rightToo much of
the factor
Situation in
the Solar
System
•Too little
sunlight
and
chemicals,
organisms
die
•Steady
input of
light and
chemical
energy,
cells
function
•Too much
energy
means
high
temp. and
harmful
radiation,
UV rays.
•Inner
planets
receives
light than
outer
planets

18. NUTRIENTS

19. Not enough of
the factor
Just rightToo much of
the factor
Situation in
the Solar
System
•Planets
without
system to
deliver
nutrients to
its
organisms
cannot
support life
•Solid planets
have nutrients
in them. Those
with water and
geologic
activities can
transport &
replenish
chemicals
needed by
organisms
•Too much
activity
prevents
organisms
ability to
get enough
nutrients
•Earth has
water cycle,
atmosphere
and
volcanoes
to circulate
nutrients

20. What makes a planet
habitable?

21. 1. Liquid
water

22. 2. Atmosphere

23. 3. Tectonics plates

24. Earth is habitable
✓It has the right distance from the sun;
✓Protected from harmful solar radiation by
its magnetic field;
✓It is kept warm by an insulating
atmosphere
✓It has the right amount of ingredients for
life, water and carbon

26. EARTH, MARS
AND VENUS
Similarities

Differences
Water
Oxygen
Life forms

27. What do you think is the reason
of the failure of mankind in
protecting the environment and
the life here on Earth?

28. ACTIVITIES