Riddles

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Across
  1. 1. I bounce but have no legs
  2. 3. I am water but hard and cold
  3. 4. I twinkle in the sky and come out at night
  4. 5. I can crack up but never laugh
  5. 7. I am made of tiny grains and found at the beach
  6. 8. You can feel me but cannot see me
Down
  1. 1. I float in the air and pop when touched
  2. 2. I am hot and can glow, but I am not the sun
  3. 4. I follow you all day but disappear at night
  4. 6. I shine at night but am not a star