Branches of physics

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Across
  1. 5. -Deals with study of electric charges and circuits
  2. 7. - Deals with heat energy as it is transformed to other forms of energy
  3. 8. - Deals with motion in relation to forces
Down
  1. 1. Physics - Deals with quantum physics
  2. 2. optics - Deals with light and its behavior
  3. 3. - Deals with propagation of energy through space
  4. 4. - Deals with celestial objects e.g. stars, planets
  5. 6. Magnetism - Deals with the electric and magnetic fields and their relationship