1. CHAPTER 2 LESSON 2
THE SOLAR SYSTEM

2. NG: SOLAR SYSTEM 101 4:10

3. FORMATION OF THE SOLAR SYSTEM

4. SOLAR SYSTEM
The solar system is made up of the Sun and everything that orbits it.

5. SOLAR SYSTEM
The solar system formed from a cloud of gas and dust that pulled together due to the force of gravity.

6. SOLAR SYSTEM
The Sun is a star that formed at the center of the solar system.

7. NG: THE SUN 101

9. SOLAR SYSTEM
The other objects in the solar system formed from leftover gas and dust pulled by gravity into a disk.

10. PLANETS SONG

11. CHARACTERISTICS OF PLANETS
1. Orbits the Sun

12. CHARACTERISTICS OF PLANETS
2. Is massive enough to be nearly spherical in shape

13. CHARACTERISTICS OF PLANETS
3. Has no other large object in its orbital path.

14. SOLAR SYSTEM

15. PLANET FACTS
All eight planets revolve in the same direction around the Sun.

16. PLANET FACTS
The closer a planet is to the Sun, the faster it revolves.

17. PLANET FACTS
The most distant planet is Neptune, which is about 30 AU from the Sun

18. DWARF PLANETS
Orbit the Sun

19. DWARF PLANETS
Nearly spherical in shape

20. DWARF PLANETS
Share their orbital paths with other objects of similar size

21. DWARF PLANET SONG

22. MOON
A natural satellite that orbits an object other than a star.

23. LESS THAN FIVE

24. WHAT IS AN ASTEROID?

25. ASTEROIDS
Small, rocky objects that orbit the Sun.

26. ASTEROIDS
There are many of these objects in the asteroid belt between the planets Mars and Jupiter.

27. WHAT IS A COMET?

28. COMETS
Small, icy objects that orbit the Sun and develop tails as they get close to the Sun.

29. WHAT IS A METEOROID?

30. METEOROIDS
Solid bits of debris that travel through the solar system.

31. METEOR
A meteoroid that passes through Earth’s atmosphere produces a streak of light

32. METEORITE
A meteoroid reaches Earth