Natural sciences

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Across
  1. 2. – Water in the solar heater becomes ___. (3)
  2. 4. – One of the main parts of the system. (5)
  3. 5. – Two main ___ of the system are the panel and the tank. (5)
  4. 8. – A solar heater uses the energy from the ___. (3)
Down
  1. 1. – Water can be ___ when it cools down. (6)
  2. 3. – The system heats up ___. (5)
  3. 5. – These carry water between the solar panel and tank. (5)
  4. 6. – The system uses the energy of the ___. (5)
  5. 7. – A container that stores hot water. (4)