2. Grupo Donos 2008 INTERESTING FACTS

3. Grupo Donos 2008 Our solar system has eight planets and one star: the Sun. The planets are (in order, from the Sun, outward): Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The Solar System This mnemonic helps us remember the planets in order: My Very Educated Mother Just Served Us Nachos

4. Grupo Donos 2008 Pluto is no longer a planet, according to astronomers.

5. Grupo Donos 2008 In 1993, astronomers discovered thousands of objects similar to Pluto in size and composition, in the region of Pluto’s orbit. Pluto does not fit with either the rocky planets (Mercury, Venus, Earth, and Mars) or the gas giant planets (Jupiter, Saturn, Uranus, and Neptune).

6. Grupo Donos 2008 The solar system is about 4.5 billion years old.

7. Grupo Donos 2008 MercuryVenus Earth Mars Planets come in different sizes and colours.

8. Grupo Donos 2008 MercuryVenus Earth Mars The four planets closer to the Sun are called rocky or terrestrial planets. They are small in size and similar to Earth in composition.

9. Grupo Donos 2008 MercuryVenus Earth Mars The rocky planets have no rings, and only two of them (Earth and Mars) have moons.

10. Grupo Donos 2008 Saturn Jupiter Uranus Neptune The four outer planets, called gas giants, are much larger than the rocky planets.

11. Grupo Donos 2008 Saturn Jupiter Uranus Neptune The gas giants all have rings and many moons. They are made up mostly of hydrogen, helium, frozen water, ammonia, methane, and carbon monoxide.

12. Grupo Donos 2008 Some planets can be seen with the naked eye, which is how they were discovered by the ancient civilizations. They are Mercury, Venus, Mars, Jupiter, and Saturn.

13. Grupo Donos 2008 The other two planets —Uranus and Neptune— and Pluto were discovered using a telescope.

14. Grupo Donos 2008 Jupiter, Saturn, Uranus and Neptune have rings.

15. Grupo Donos 2008 Earth is not the largest object in the solar system.

16. Grupo Donos 2008 Stars and galaxies are part of the universe, not only part of the solar system.

17. Grupo Donos 2008 The sun is a star.

18. Grupo Donos 2008 Quiz on the Solar System

19. Grupo Donos 2008 The sun is… a comet an asteroid a star Choose the correct answer

20. Grupo Donos 2008 The sun is a star

21. Grupo Donos 2008 How old is our solar system? It’s about 3.5 billion years old It’s about 4.5 billion years old It’s about 8.5 billion years old

22. Grupo Donos 2008 How old is our solar system? It’s about 4.5 billion years old

23. Grupo Donos 2008 Which planets are called “ rocky”? Mercury, Earth, Mars and Jupiter. Mercury, Venus, and Earth. Mercury,Venus, Earth and Mars.

24. Grupo Donos 2008 Rocky planets MercuryVenus Earth Mars

25. Grupo Donos 2008 Which planets have rings and moons? Rocky planets Gas planets

26. Grupo Donos 2008 Which planets have rings and moons? Gas planets

27. Grupo Donos 2008 Which planets can be seen with the naked eye? Mercury, Venus, Mars, Saturn, and Uranus. Mercury, Venus, Mars, Jupiter, and Neptune. Mercury, Venus, Mars, Jupiter, and Saturn.

28. Grupo Donos 2008 Which planets can be seen with the naked eye? Mercury, Venus, Mars, Jupiter, and Saturn.

29. Grupo Donos 2008 Which is the correct answer? Jupiter, Saturn, Uranus and Neptune have rings Mars, Saturn, Uranus and Neptune have rings Earth, Saturn, Uranus and Neptune have rings

30. Grupo Donos 2008 Which is the correct answer? Jupiter, Saturn, Uranus and Neptune have rings

31. Grupo Donos 2008 Is it true or false? Earth is the largest object in the solar system. Stars and galaxies are part of the universe not only part of the solar system. The sun is a star. F T T