6th grade science - end of year 1

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Across
  1. 5. THIS TYPE OF MOLECULE HAS NEGATIVE AND POSITIVE ENDS, MAKING IT EASY TO ATTRACT TO OTHER THINGS
  2. 7. TRANSFER OF HEAT THROUGH DIRECT TOUCH
  3. 8. MEASURES PRESSURE
  4. 9. BREAKING DOWN ROCKS
  5. 11. CLOSEST PLANET TO THE SUN
  6. 13. WHERE 2 MASSES OF AIR MEET
  7. 14. THIS VARIABLE GOES ON THE Y AXIS
  8. 16. A STORM THAT IS A LOW PRESSURE SYSTEM, BRINGS RAIN, WIND, THUNDER AND LIGHTNING, AND LASTS ABOUT A WEEK
  9. 17. ONE OF THESE ON EARTH’S AXIS TAKES 24 HOURS
  10. 19. THE REASON THE SOLAR SYSTEM FORMED AND IS HELD TOGETHER
  11. 20. ORDER OF THE PLANETS FROM THE SUN
  12. 21. ONE ASTRONOMICAL UNIT IS EQUAL TO 93,000,000 ________
Down
  1. 1. AN EDUCATED GUESS
  2. 2. 2 OR MORE ELEMENTS COMBINED
  3. 3. DECEMBER 21 OR JUNE 21
  4. 4. THIS VARIABLE GOES ON THE X AXIS
  5. 6. A ________ FRONT WILL BRING RAIN AND WIND, BUT ONCE IT PASSES THERE WILL BE COOLER TEMPS
  6. 10. NONLIVING THINGS
  7. 12. PURE SUBSTANCE COMPOSED ENTIRELY OF A SINGLE TYPE OF ATOM, CAN NOT BE BROKEN DOWN ANYMORE
  8. 15. THIS TYPE OF ENERGY IS USED DURING PHOTOSYNTHESIS
  9. 18. THE SOLAR SYSTEM BEGAN AS A ______________