The solar system and the earth

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The solar system and the earth

  1. 1. THE SOLAR SYSTEM AND THE EARTH
  2. 2. THE SOLAR SYSTEM AND THE EARTH
  3. 3. 1) The Universe All the matter and space that exists. It includes celestial bodies like: 
  4. 4. Galaxy:
  5. 5. Stars:
  6. 6. Planets:
  7. 7. Satellites:
  8. 8. Asteroids:
  9. 9. Comets:
  10. 10. Meteorites:
  11. 11. Galaxy  An enormous cloud of stars and other celestial bodies
  12. 12. Galaxy An enormo us cloud of stars and other celestial bodies  Has 4 shapes: 1. 2. 3. 4. Spherical Elliptical Spiral Irregular Our Galaxy is the Milky Way. It has a spherical shape.
  13. 13. Stars -A celestial body with a spheric al shape - Made of gases 1. Color Example: The sun is a yellow-orange star. 2. Size Example: large star = giant star small star = dwarf star *The sun is a dwarf star!
  14. 14. Sun Moves in two ways: 1. 2. Rotation Revolution
  15. 15. Planets • large spherical bodies that revolve around a star
  16. 16. Natural Satellites: • • smaller celestial bodies that revolve around planets the Earth has only one natural satellite: the moon
  17. 17. Asteroids • • bodies of rock smaller than planets
  18. 18. Comets • bodies of rock and ice
  19. 19. Meteorites • • Also called shooting star Small pieces of rock from asteroids and comets that travel through space
  20. 20. The Universe All the matter and space that exists Galaxy Stars Enormous cloud of stars and celestial bodies A celestial body with the spherical shape that is made of gases Example: The Milky Way Galaxy Classified according to its color and shape Example: the Sun Planets Large spherical bodies that revolve around a star Satellites Small celestial bodies that revolve around planets Asteroids Bodies of rock Comets Bodies of rock and ice Meteorites Also called shooting stars Small pieces of rocks from asteroids and comets
  21. 21. Copy and answer in your notebook. 1. 2. 3. 4. 5. Galaxies are enormous ________________ of stars, gases and cosmic dust. The Milky Way galaxy has a ________________ shape. The Sun is a ________________ star. ________________ are bodies of rock and ice. ________________ are large sphercial bodies that revolve around a star.
  22. 22. 2) Our solar system   part of the Milky Way (Via Lactea) Galaxy. includes the Sun and all the celestial bodies that revolve around it, such as: • Planets • Natural satellites • Asteroids • Comets • Meteorite s
  23. 23. Planets Inner planets: Mercury The Earth Venus Mars  Outer planets: Jupiter Saturn Uranus Neptune •
  24. 24. 3) How does the Earth move?    Rotation: The Earth rotates on an imaginary axis. It takes 24 hours.
  25. 25. 3) How does the Earth move?    Revolution: The Earth revolves around the Sun in an elliptical orbit. It takes one year (365 days, 6 hours and 9 minutes).
  26. 26. The Milky Way Galaxy Sun Planets Other celestial bodies Inner Planets Mercury Venus Outer Planets Mars Earth Rotates Takes 24 hours Jupiter Revolves Takes 365 ¼ days Saturn Uranus Neptune
  27. 27. Copy and answer in your notebook. 1. 2. 3. 4. The four planets closest to the sun are ________________, ________________, ________________ and ________________. These planets are called ________________. The Earth completes one ________________ every 24 hours. The Earth takes one ________________ to go around the Sun.
  28. 28. 4) The Layers of the Earth 1. Atmosphere   2. Hydrosphere  3. Contains various gases Surrounds the whole planet All the water that exists in the Earth Geosphere   Solid part of the Earth Has different layers
  29. 29. Layers of the Geosphere  Crust  Outer layer of the geosphere made of rocks  Includes the Earth´s continents, islands and ocean floors  Mantle  Layer  of rock under the crust, very hot Core  Inner layer of the geosphere  Made of iron
  30. 30. Layers of the Earth Atmosphere Hydrosphere Geosphere Made of gases All the water in Earth Solid part of the Earth Crust Mantle Core
  31. 31. Copy and answer in your notebook. 1. 2. 3. Name the layers of the Earth´s atmosphere. Draw and label the layers of the geosphere. On which part of the geosphere do people live?
  32. 32. 5) The Moon  1. 2. moves in two ways: It rotates on an imaginary axis. It takes 28 days. It revolves around the Earth. It takes 28 days. During this time, we see different lunar phases:
  33. 33. 1. New moon
  34. 34. 2. First quarter
  35. 35. 3. Full moon
  36. 36. 4. Last quarter
  37. 37. Eclipse Happens when the Sun, the Earth and the Moon are in a straight line  There are two kinds of eclipse 
  38. 38. Solar Eclipse  The Moon is between the Sun and the Earth
  39. 39. Lunar Eclipse   The Earth is between the Sun and the Moon Happens during the Full Moon
  40. 40. The Moon Lunar Phases Moves Rotates on an imaginary axis Eclipses Revolves around the Earth New Moon First Quarter Solar Eclipse Lunar Eclipse Takes 28 days Full Moon Last Quarter Sun - Moon - Earth Sun - Earth - Moon
  41. 41. Answer in your notebook. Match the pictures with the Moon´s phases.  Answer the following questions.  1. 2. What eclipse happens during the full moon? What eclipse happens when the moon is between the Sun and the Earth?

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