Presentasi ini menjelaskan tentang bumi secara Umum,meliputi karakteristik,Struktur, dan beberapa fakta lainnya tentang Bumi, Semoga Bermanfaat :) Kirimkan juga slide anda, akan saya tunggu, suka dan bagikan<3

4. What is Earth?
What is the earth
made of?
Facts of Earth
Structure of the
Earth
Earth Rotation and
Revolution

5. What is Earth?
Earth is the third planet from the sun

6. What is the earth made of?

7. Structure of the earth

8. Earth Rotation

9. Rotation of the Earth
• Rotation means “to spin.” Earth rotates on its axis (an
imaginary line running through the center of the Earth from
the North Pole to the South Pole).
• Earth completes 1 rotation (spin) every 24 hours.

10. Day and Night
• Question: What causes day and night on Earth?
• Answer: Day and night are caused by Earth’s rotation (spin)
on its axis. When ½ of the Earth is facing the sun it is DAY.
When ½ of the Earth is facing away from the sun it is NIGHT.

11. Earth Revolution

12. Revolution of the Earth
• Revolution means “to go around something.”
• A synonym for revolution is orbit. (revolution = orbit)
• The Earth revolves (goes around) the sun counterclockwise.
• It takes Earth 365 days (or 1 year) to make one complete
revolution around the sun.

13. The Seasons
• Question: What causes the seasons on Earth?
• Answer: Earth’s seasons are caused by 1) Earth’s titled axis
and 2) Earth’s revolution (orbit) around the sun. When the
Northern Hemisphere(Half of the earth) is tilted toward
the sun we have summer. When the Northern Hemisphere
is titled away from the sun we have winter.

15. SPACE
There Are Not 24 Hours In a Day
23 hours, 56 minutes, and 4 second – the
time it takes earth to rotate on its axis,
called sideral day
Earth Is Smoother than Bowling ball
High mountains and deep ocean trenches
make up only 1/5000th of the earth
circumference
1 Object a Day
NASA (National Aeronautics and Space
Administration)estimates on average, that one
piece of space junk returns to earth each day

16. ATMOSPHERE
100 TONS
Of small meteorites mainly
fragments of dust , enter the
earth’s atmosphere every day.
8.6 MILLION
Lightning strikes a
day
The Ozon Hole Is Shrinking
In 2012, the hole in the layer was
smaller than it has ever been in
the last 10 year

17. SEA
WATER ON EARTH IS
97% Salted
3% Fresh
90%
Of all volcanic activity
occurs in the ocean
10.9 KM
The depth of the deepest area of the
ocean : The Mariana Trench

18. UNDER EARTH
Earth Is The Only Planet in our Solar
System with plate techtonic
Without them, carbon wouldn’t be
consumed and recycled. And the earth
would overheat (just like Venus)
99% of Earth’s Gold lies in its Core
Enough to form 1.5-foot coat around the
surface of the earth.
2.8 KM/1.7 MILES
The depth at witch bacteria have
been found. They survive by using
radioactivity from uranium to
convert water to usable energy

19. Message from Earth