Benjy's Minecraft puzzle

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Across
  1. 1. what is the hardest block
  2. 4. what is the name of the sand in the end
  3. 6. In the crafting table in the top left what plank goes there
  4. 7. what is a nether portal made of
  5. 8. What do you use to break a tree
Down
  1. 2. what is the only power source that can't be turned off
  2. 3. what are you doing when you break a block
  3. 5. what mob is named ender something