1. Solar System
#17

3. Models Geocentric Heliocentric Earth is center of universe 140 A.D.
Earth and other planets revolve around sun
1500’s

4. Units of measurement Light year Astronomical unit
It is the distance that light can travel in one year.
9,500,000,000,000 km
Astronomical unit
Average distance between the earth and the sun
150 million km

5. Components of Solar System
4 parts
Sun
Planets
inner & outer planets
Moons
A variety of smaller objects
Ecliptic plane
planets orbits are along the same plane

6. Terrestrial Planets 4 inner planets Small, dense, and have rocky crust
Mercury
Venus
Earth
Mars
Small, dense, and have rocky crust
Have crust, mantle and iron core

7. Asteroid Belt Asteroid small, rocky bodies
Reminisce of early solar system that never came together

8. Jovian Giants 4 Outer planets Small dense cores of metal and rock
Jupiter
Saturn
Uranus
Neptune
Small dense cores of metal and rock
Mostly liquid hydrogen and helium
No solid surface

10. Edge of the Solar System
Kuiper belt
Doughnut shaped ring of ice, dust, and rock
Oort cloud
Belt of comets
Comet
Dusty pieces of ice and rock

11. The Sun Generated by fusion Plasma Hydrogen to Helium
Charged particles at high speeds

12. Sun’s Layers Interior Atmosphere Core – 15,600,000°C
Radiative zone – 8,000,000°C
Convection zone – 1,500,000°C
Atmosphere
Photosphere – 6,000°C
Chromosphere – 20,000°C
Corona – 1,000,000°C

13. Features Sunspots Dark spots on the photosphere
Lower temp/higher magnetic field

14. Features
Solar Flare
Eruption of gas
Releases extra energy

15. Features
Solar wind
Constant stream of electrically charged protons and electrons given off by corona
Flares may disrupt electronics on earth
Causes of auroras