1. The Sun

2. Our Solar Centre
the Sun is a star at the centre of our universe
It warms Earth and supports every form of life on the planet
it makes up around 99.86% of the Solar System’s mass
Sun is made of:
hydrogen - 74%
helium - 24%
oxygen, carbon, iron and neon make up the remaining percentage
the Sun’s diameter is about 110 times wider than Earth’s
light from the Sun reaches Earth in around 8 minutes
the average distance from the Sun to the Earth is around 150 million kilometers
Earth is the only planet in the solar system whose orbit is just the right distance away to sustain life
emits radiation in almost all forms found in the electromagnetic spectrum including:
visible light
ultraviolet radiation (UV)
infrared radiation

3. The Layers of the Sun
Core
nuclear fusion occurs here which produces huge amounts of energy
Radiative Zone
light and other forms of radiation are continuously reabsorbed
Convective Zone
continuous circulation of plasma
Photosphere
the part of the sun we see from the Earth
Chromosphere
can only be seen during a total eclipse
Corona
outermost layer of the sun

5. Surface Features of the Sun
Sunspot
region of the Sun`s surface that is cooler than surrounding areas
Prominences
large, curved stream of bright particles that frequently forms a loop
Solar flares
massive explosion that originates at the Sun`s surface
Coronal mass ejection
a very powerful kind of flare that when aimed at Earth could potentially damage satellites or transmission lines on the ground

7. The Sun`s Effects on Earth
Solar Wind
continuous flow of particles out of the Sun`s surface
may damage electronic equipment and devices
Aurora Borealis
from solar wind and produces displays of green, yellow, and red light
in the skies in the northern and southern regions of Earth
northern region – Aurora Borealis
southern region – Aurora Australis