Sceince

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Across
  1. 2. are satellites that orbit a planet.
  2. 6. This exploded creating time and space. This is known as The Big Bang .
  3. 8. jupiter, saturn, uranus, neptune
  4. 9. composed of one or more sun, planets, moons and life.
  5. 10. composed of galaxies
  6. 12. gravity collapse the nebula,Matter condenses to form suns and planets and moons,it begins to rotate and heats up, Planets form and cool
Down
  1. 1. Can be round or irregular shaped Most orbit the sun in the Asteroid Belt between Mars and Juipterr Sizes as large as 100 km in diameterMillions of asteroids in the Asteroid Belt Jupiter’s gravity helps keep the asteroids in the asteroid Belt
  2. 3. Snowballs composed of rock and ics .Orbits the sun Reappear on a regular basis no light of their own, reflect the Sun’s light
  3. 4. mercury, venus, earth, mars
  4. 5. is a cloud of dust, hydrogen, helium and other gases where stars and planets form.
  5. 7. composed of stars, dust , gas and solar systems.
  6. 11. Hunks of ice or rocks smaller than asteroids When they enter the Earth’s atmosphere form bright streaks called meteorsIt they reach the ground are called meteorites