Star Energy

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Across
  1. 3. a massive planet mostly made of hydrogen; about 1,000 of these can fit into our sun
  2. 6. what two hydrogen atoms fuse into
  3. 8. the force that holds together our solar system
  4. 9. our star
  5. 10. what is released from nuclear fusion and what all living things need to survive
  6. 11. electromagnetic radiation
Down
  1. 1. this is a reaction that occurs over and over again; it happens with nuclear fusion in stars
  2. 2. this builds up in a star with more mass
  3. 4. the amount of matter in a given volume
  4. 5. the process that lights up a star
  5. 7. the simplest and most abundant element