1. 3 rd Grade

3. The Sun is a star. The Sun is the center of the solar system.

4.  A planet is a large body of rock or gas that orbits the sky.  The Solar System has nine planets.  Earth is one of the nine planets.

6.  The Inner planets are closest to the sun. -Mercury -Venus -Earth -Mars

8.  Earth is different from the other planets it has a watery surface.  Earth is the only planet with a lot of oxygen in the atmosphere.  Earth has plant and animal life.

9.  The outer planets are colder than the inner planets because they are farthest away from the sun. -Jupiter -Saturn -Uranus -Neptune -Pluto

11.  Asteroids are chunks of rock or metal that orbit the sun.  Comets are large balls of ice and dust that orbit the sun.