1. Layers of the sun Corona (outermost part of atmosphere)
Chromosphere (visible part of sun)
Photosphere
Core
(Source of Suns energy- FUSION)
Radiative Zone
(where produced energy goes)
Convection Zone
(movement of energy to the surface)

2. SUN PRODUCES ENERGY THROUGH FUSION!
It its Core….
SUN PRODUCES ENERGY THROUGH FUSION!
FUSION = coming together
FISSION = splitting

3. Earths main source of energy comes from the Sun
Some energy enters into our atmosphere
Most is scattered back out into space (clouds, other layers of atmosphere)
In addition to atmospheric layers, Earths magnetic field protects its from electrically charged particles from solar winds and cosmic rays

4. Benefits of Our SUN! Provides energy for the food cycle
Powers the water cycle & drives our oceans
Creates weather

5. CFU! The amount of Sunlight Earth receives because of its tilt results in seasons..
NORTH AMERICA IS IN THE NORTHERN HEMISPHERE, WHEN DO WE EXPERIENCE SUMMER? (when we are tilted TOWARD or AWAY from the Sun)

6. Too much UV radiation damages our skin !
DANGERS OF OUR SUN
Too much UV radiation damages our skin !
Less ozone (gas) layer = more harmful UV radiation
Ozone being depleted by natural & human – created causes

7. SOLAR CYLE: Patterns of high and low activity of the sun that repeat every 11 years
SUN SPOTS & SOLAR FLARE
Dark spots that tend to be cooler than the surface of the Sun
May be as small as Earth or as large as Neptune
Forms when magnetic field lines in the Sun twist & poke through photosphere
According to scientists:
more SS, warmer climate on Earth
low or no SS, colder climate
"ice ages"
A huge amount of solar energy (radiation) that bursts from the Sun that can affect:
our satellites (GPS, aviation, govt. time stations, weather stations, etc.)
Astronauts
Power grids on Earth (minutes to hours)
1989 Canada
1997 traffic telecommunication
Corrosion of oil and gas pipelines

8. Solar wind THE “GOOD” THE BAD
Flow of charges particles (plasma) from the Sun
Responsible for “space weather”
Similar to Earth's winds except that Earth's winds involve air masses and solar winds involve the movement of matter.
THE “GOOD”
When solar wind encounters Earth’s magnetic field, it excites gases in atmosphere causing them to glow “aurora”
Seen in Northern/Southern areas rather than Equator
THE BAD
Disrupts radio signals & disturbs upper layers of Earths atmosphere

9. Collecting Data About the SUN
solar telescopes that detect solar activity
they are equipped with detectors sensitive to radiation and relay the info to scientists
YOHKOH SATELLITE
SWEDISH SOLAR TELESCOPE