Ch. 18 Lesson 1  What makes up the universe?
universe <ul><li>all of space & everything in it </li></ul>
galaxy <ul><li>system of dust, gas & millions of stars held together by gravity </li></ul>
What galaxy do we live in?
 
astronomy <ul><li>study of Sun, Moon, stars & other objects in space </li></ul>
solar system <ul><li>Sun, planets, their moons, etc.  </li></ul><ul><ul><li>all revolve around Sun </li></ul></ul>
Inv. 1 What is the Solar System Made of ? Ch. 2
asteroid belt <ul><li>group of asteroids located between inner & outer planets </li></ul>
 
asteroid <ul><li>rocky object that orbits the Sun </li></ul><ul><li>too small to be considered a planet </li></ul>
 
The Asteroid Belt [03:21]
planet star
<ul><li>medium-sized star </li></ul><ul><li>largest object in our solar system </li></ul><ul><li>magnetic field  </li></ul>
If the Sun were hollow, we could fit one million Earth-sized planets inside of it!
 
The sun’s gravity is the most powerful force in the solar system because the sun’s mass is so large.  99.8 % of the mass o...
Time  to  review
universe <ul><li>all of space & everything in it </li></ul>
asteroid <ul><li>rocky object that orbits the Sun </li></ul><ul><li>too small to be considered a planet </li></ul>
<ul><li>is a ____-sized </li></ul><ul><li>star. </li></ul>medium
asteroid belt <ul><li>group of asteroids located between inner & outer planets </li></ul>
astronomy <ul><li>study of Sun, Moon, stars & other objects in space </li></ul>
galaxy <ul><li>system of dust, gas & millions of stars held together by gravity </li></ul>
What galaxy do we live in?
 
<ul><li>largest body in our solar system </li></ul>
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4th Grade-Ch 18 Lesson 1 What makes up the universe

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4th Grade-Ch 18 Lesson 1 What makes up the universe

  1. 1. Ch. 18 Lesson 1 What makes up the universe?
  2. 2. universe <ul><li>all of space & everything in it </li></ul>
  3. 3. galaxy <ul><li>system of dust, gas & millions of stars held together by gravity </li></ul>
  4. 4. What galaxy do we live in?
  5. 6. astronomy <ul><li>study of Sun, Moon, stars & other objects in space </li></ul>
  6. 7. solar system <ul><li>Sun, planets, their moons, etc. </li></ul><ul><ul><li>all revolve around Sun </li></ul></ul>
  7. 8. Inv. 1 What is the Solar System Made of ? Ch. 2
  8. 9. asteroid belt <ul><li>group of asteroids located between inner & outer planets </li></ul>
  9. 11. asteroid <ul><li>rocky object that orbits the Sun </li></ul><ul><li>too small to be considered a planet </li></ul>
  10. 13. The Asteroid Belt [03:21]
  11. 14. planet star
  12. 15. <ul><li>medium-sized star </li></ul><ul><li>largest object in our solar system </li></ul><ul><li>magnetic field </li></ul>
  13. 16. If the Sun were hollow, we could fit one million Earth-sized planets inside of it!
  14. 18. The sun’s gravity is the most powerful force in the solar system because the sun’s mass is so large. 99.8 % of the mass of the solar system is in the sun.
  15. 19. Time to review
  16. 20. universe <ul><li>all of space & everything in it </li></ul>
  17. 21. asteroid <ul><li>rocky object that orbits the Sun </li></ul><ul><li>too small to be considered a planet </li></ul>
  18. 22. <ul><li>is a ____-sized </li></ul><ul><li>star. </li></ul>medium
  19. 23. asteroid belt <ul><li>group of asteroids located between inner & outer planets </li></ul>
  20. 24. astronomy <ul><li>study of Sun, Moon, stars & other objects in space </li></ul>
  21. 25. galaxy <ul><li>system of dust, gas & millions of stars held together by gravity </li></ul>
  22. 26. What galaxy do we live in?
  23. 28. <ul><li>largest body in our solar system </li></ul>
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