1. The Sun
The sun is a burning ball of gases. We call these _______. The sun is one of more than 100 billion in the Milky Way Galaxy.

2. What does the abbreviation AU mean?
_____________ ______

3. Inner Planets of our Solar System
This planet is named _______.
This planet in the _______ closest to the sun
It's size is the _______ largest in the Solar System

4. Inner Planets of our Solar System
This planet is named _______.
This planet in the _______ closest to the sun
It's size is the _______ largest in the Solar System

5. Inner Planets of our Solar System
This planet is named _______.
This planet in the _______ closest to the sun
It's size is the _______ largest in the Solar System

6. Inner Planets of our Solar System
This planet is named _______.
This planet in the _______ closest to the sun
It's size is the _______ largest in the Solar System

7. Outer Planets of our Solar System
This planet is named _______.
This planet in the _______ farthest from the sun
It's size is the _______ largest in the Solar System

8. Outer Planets of our Solar System
This planet is named _______.
This planet in the _______ farthest from the sun
It's size is the _______ largest in the Solar System

9. Outer Planets of our Solar System
This planet is named _______.
This planet in the _______ farthest from the sun
It's size is the _______ largest in the Solar System

10. Outer Planets of our Solar System
This planet is named _______.
This planet in the _______ farthest from the sun
It's size is the _______ largest in the Solar System

11. The Edge of our Solar System
The _______ belt is a disk shaped region of icy objects--including dwarf planets such as Pluto. It starts around Neptune and continues to the edge of the solar system.

12. Formation of our Solar System
Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the _______ _______.

13. Threats from the Sun
The sun shoots out energized particles, primarily electrons and protons (at speeds as high as 900 km/s and at a temperature of 1 million degrees Celsius). This is called the _______ _______. Earth’s _________ field (caused by the rotation of the earth and the metal core) protects us from these particles.