1. The Sun and Earth

2. Our very own STAR Our sun is a star Located in the Milky Way Galaxy
Large ball of gas made mostly of hydrogen and helium held together by gravity

3. The structure of the sun
Layers
Core
Radiative Zone
Convective Zone
Photosphere
Chromosphere
Corona

5. Energy Production
Nuclear fusion – process by which two nuclei with small masses (hydrogen) join together to form a larger, more massive nucleus (helium).
Produces a lot of energy
Energy leaves the sun as light, takes 8.3 minutes to reach Earth

6. Sunspots Cooler, dark spots on the sun's surface
Related to changes in the magnetic properties of the sun
Solar flares – giant storms on the surface, send out huge streams of particles which interact with Earth's atmosphere, causing auroras

8. Solar flares

9. Formed from the accumulation of planetesimals
EARTH
Formed from the accumulation of planetesimals

10. Earth and its interior layers
Core
Mantle
Crust

11. Atmosphere
A big difference between Earth 4.6 billion years ago and today is the composition of the atmosphere
Planetary degassing – gasses like water vapor, CO2, sulfur dioxide and nitrogen were released from the interior of Earth from volcanoes and other processes

12. Earth's atmosphere today
Today the atmosphere is composed of oxygen, nitrogen, and other gases that allow for life to exist
Ozone layer – protects us from UV rays
With the emergence of plants, oxygen levels began to rise

13. Atmospheric layers