1. Our Solar System

2. Planets Inner Planets Outer Planets Mercury Venus Earth Mars Jupiter
Saturn
Uranus
Neptune

3. The Inner Planets

4. Characteristics of an Inner Planet:
Smaller than outer planets
Few to no moons
Less dense than outer planets
Hotter than outer planets
Solid
Also called the Rocky Planets

5. Mercury First Planet from the Sun Smallest planet in our solar system
Fastest revolution around the Sun
Named after the quick messenger of the Roman gods
No moons
Hot days, cold nights
Covered in craters
Day: 59 Earth days
Year: 88 Earth years

6. Venus 2nd planet from the Sun
Hottest planet in the solar system due to the greenhouse effect
Known as the “Evening Star” or “Morning Star”
No moons
Named after the Roman goddess of beauty and love
Similar to the size and mass of Earth
Day: 243 Earth days
Year: Earth days

7. Earth 3rd planet from the Sun Only planet known to contain life
One moon
93 million miles from the Sun
Year: 365 ¼ days
Day 24 hours
Has four seasons

8. Mars 4th planet from the Sun Day: 24.6 Earth hours
Year: 687 Earth days
Known as “The Red Planet”
Named after the Roman god of war
Has two moons: Phobos and Deimos

9. The Outer Planets

10. Characteristics of an Outer Planet:
Colder than inner planets
Larger than inner planets
More dense than inner planets
Many moons
Gaseous
Also called the Jovian Planets and Gas Giant Planets

11. Jupiter 5th planet from the Sun Largest planet
Diameter is 11 times bigger than Earth’s
Faint, narrow rings
62 known moons
Day: 9 Earth hours
Year: Earth years
Named after the primary Roman god

12. Named after the Roman god of agriculture
Saturn
6th planet from the Sun
Day: 10 Earth hours
Year: Earth years
Thousands of rings
At least 48 known moons
2nd largest planet
Named after the Roman god of agriculture

13. Uranus 7th planet from the Sun
Third largest planet in the solar system
Rotates on its side
Day: 18 Earth hours
Year: 84 Earth years
Named after the Roman god of the sky
11 rings
27 moons

14. Named after the Roman god of the Sea
Neptune
8th planet from the Sun
13 moons
Faint, narrow rings
Day: 19 Earth hours
Year: 165 Earth years
Named after the Roman god of the Sea

15. Test Your Knowledge

16. The Sun Located at the center of the solar system
Star made up of hydrogen and helium
1,300,000 Earth’s could fit inside the sun
109 times bigger than Earth
Yellow star

17. https://www. youtube. com/watch

18. Meteors, Meteorites, and Meteroids
Meteroid – small bodies that travel through space
Meteor – meteoroid that has reached earth’s atmosphere; sometimes called a “Shooting Star”
Meteorite – a meteor that has fallen to Earth

19. Asteroids Also known as planetoids or minor planets
Most revolve around the sun between Mars and Jupiter
First and biggest ever discovered is named Ceres

20. Comets Small icy, celestial body that orbits the sun
Sometimes called “Dirty Snowballs”

21. Let’s Review!