Science 6th All Of 2nd Semester


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Science 6th All Of 2nd Semester

  1. 1. SPACE Chapter 4 6 th Grade Science
  2. 21. 4.6 Exploring the Solar System <ul><li>The sun is the center of our solar system </li></ul><ul><li>The solar system is made up of the sun and all the heavenly bodies that orbit it. </li></ul><ul><li>We have eight planets in our solar system </li></ul>
  3. 22. Inner Planets <ul><li>Mercury, Venus, Earth, and Mars </li></ul><ul><li>These are made mainly of rocks and metals. </li></ul>
  4. 23. Outer Planets <ul><li>Jupiter, Saturn, Uranus, and Neptune. </li></ul><ul><li>Made of mainly gases, liquids, or ice. </li></ul>
  5. 24. Moons <ul><li>Earth has one moon. </li></ul><ul><li>Venus and Mercury are the only two planets that have NO moons. </li></ul>
  6. 25. 4.7 Our Earth <ul><li>The earth REVOLVES around the sun. </li></ul><ul><li>One revolution (trip around the sun) takes earth 365 ¼ days. </li></ul><ul><li>This is called a “solar year” </li></ul>
  7. 26. Rotation page 280 <ul><li>A rotation is the earth’s spinning on its axis. </li></ul><ul><li>One rotation is completed in about 24 hours. </li></ul>
  8. 27. Atmospheric Filter <ul><li>Our atmosphere acts like a filter to keep earth a place where humans can live. </li></ul><ul><li>The atmosphere is a blanket of air. </li></ul><ul><li>It protects us from the sun’s harmful UV rays </li></ul><ul><li>It also keeps earth warm because of the “green house effect.” This is when the heat is trapped on earth because of the atmosphere. </li></ul>
  9. 28. 4.8 The Mysterious Moon <ul><li>The moon is a natural satellite orbiting the earth. </li></ul><ul><li>It’s surface is covered with craters (holes) that make it look like a sponge. </li></ul><ul><li>The moon affects the tides of the oceans on earth. </li></ul><ul><li>There are 8 phases of the moon. </li></ul>
  10. 29. 4.9 Smaller Space Travelers <ul><li>Asteroids are tiny worlds traveling around the sun. </li></ul><ul><li>They range in size from a few 100 miles to a small house! </li></ul><ul><li>Asteroids are usually spherical shape (like earth) </li></ul><ul><li>Made up of metals and rocks </li></ul>
  11. 30. Comets: Icy travelers <ul><li>Comets are the size of asteroids </li></ul><ul><li>They have a bright tail when the come near the sun </li></ul><ul><li>It is made of frozen rock, dust, and ice. It begins to melt near the sun and this causes the beautiful tail. </li></ul><ul><li>A famous comet is “Halley’s comet” </li></ul>
  12. 31. Meteors: Momentary Intruders <ul><li>Meteoroids orbit the sun and are much smaller than asteroids. </li></ul><ul><li>If they enter the earth’s atmosphere they are called a shooting star. </li></ul><ul><li>The small ones are burned up as it enters our atmosphere. </li></ul><ul><li>Some large ones cannot be burned up in time and they hit earth. </li></ul>
  13. 32. Waxing Crescent First Quarter Waxing Gibbous Right Waning Gibbous Last Quarter Left Waning Crescent New Moon Full Moon
  14. 33. Your turn: Label the Moon Cycle
  15. 34. Now Draw and Label the Moon Cycle ?
  16. 38. Our Fascinating Earth Earth’s Structure, Earthquakes, Volcanoes, Rocks and Minerals Picture from: