The Sun is by far the largest object in the solar system, containing over 99% of the mass. It has a diameter over 100 times larger than Earth and generates energy through nuclear fusion of hydrogen into helium. Light from the Sun takes approximately 8 minutes to reach Earth. While the visible surface of the Sun appears solid, it actually consists of several layers including the core, radiative zone, convective zone, photosphere, chromosphere, and corona. Solar activity like sunspots, solar flares, and coronal mass ejections can impact power grids and communication systems on Earth. Astronomers study the Sun to better understand stars and how changes in solar output impact Earth's climate and atmosphere.

1. THE SUN:
OUR STARASTRONOMY
REPORTERS:
RHODADE JUAN
LINDYLBRIONES
B.E.ED.

2. TRUE OR FALSE
1. Light from the Sun
reaches Earth in around
8 minutes.
TRUE FALSE
2. The Sun visible to
our eyes does have a
solid surface such as
that of the Earth or the
Moon.
TRUE FALSE
THE SUN

4. BACK

5. BACK

6. SUN
o The largest object in the Solar
System.
o It contains more than 99.8% of
the total mass of the Solar
System.
o At around 1,392,000 kilometers
(865,000 miles) wide, the Sun’s
diameter is about 110 times
wider than Earth’s.
o The Sun generates huge
amounts of energy by
combining hydrogen nuclei into
helium. This process is called
nuclear fusion.

7. o The Sun is, at present, about
70% hydrogen and 28%
helium by mass everything else
(metals) amount less than 2%.
This changes slowly over time
as the Sun converts hydrogen
to helium in its core.
o A mean distance from Earth of
about 93, 000, 000 miles or 150,
000, 000 kilometers.
o The sun is 93 million miles
from earth, yet it's 270,000
times closer than the next
nearest star.
o The Sun's age is estimated to
be around 4.5 billion years.

8. STRUCTURE OF THE
SUN
1. CORE
2. RADIATIVE ZONE
3. CONVECTIVE ZONE
4. PHOTOSPHERE
5. CHROMOSPHERE
6. CORONA

10. MODERN ASTRONOMERS, PHYSICIST,
AND ENGINEERS DO THEIR BEST TO
STUDYTHE SUN, BECAUSE:
1. It is the most inexhaustible
source of present, potential
energy; it is free and non-
polluting.
2. It is the only star near enough
to observe in detail, it can be
determine what other stars are
like.
3. Changes in the sun’s energy
output affect the earth’s
climate, weather, atmosphere,
and power transmission and
communication system.

11. THE THREE PHENOMENA
THAT INDICATE VIOLENT
ACTIVITY OF THE SUN
1. SUNSPOT
2. SOLAR FLARES
3. CORONAL MASS
EJECTION or CME

12. SUNSPOT
o Are temporary, dark, relatively
cool blotches on the Sun’s bright
photosphere.
o The largest sunspots are visible at
sunrise or sunset or through a
haze.
o A typical sunspot is roughly twice
as big as Earth. The largest
sunspots maybe bigger than the
ten Earths.
o The Umbra or Core is about 4200
K of temperature while the
Penumbra, the outer gray part of
a large spot, is a few hundred
degrees cooler than photosphere.

13. SOLAR FLARES
o Sudden, tremendous, explosive
outburst of light, invisible
radiation, and material from
the sun
o One great solar flare may
release as much energy as the
whole world uses in 100, 000
years.
o Flares are short-lived, typically
lasting a few minutes and the
largest last few hours.
o Flares seem to be energized by
strong local magnetic fields.

15. CORONALMASS
EJECTION
o Blast plasma out from
the corona.
o It include prominences,
fiery arches of ionized
gases on the sun’s limb
that rise tens of
thousands of kilometers
up.

16. TWOEFFECTS OF SOLAR
ERUPTION TO MODERN
TECHNOLOGY ON EARTH
1. Disruption in power
transmission
2. Disruption in radio
communication

18. THE END…
THANK
YOU!!!
SO HOT!!! ☻