Science

12345678910111213
Across
  1. 2. It connects the cerebrum and cerebellum to the spinal cord
  2. 3. the thinnest and the outermost layer of the Earth
  3. 6. It is a form of energy that occurs naturally
  4. 7. the largest and most complex organ in the human body
  5. 8. He discovered the Continental Drift.
  6. 11. It has a twisted structure in the shape of a double helix
  7. 13. The study of earthquakes and seismic waves
Down
  1. 1. It is the vibration of the earth produced by the rapid release of energy.
  2. 4. Waves that travel through the surface of the earth
  3. 5. It is the solid outer part of the earth
  4. 9. It is a complex network of nerves and cells that carry messages to and from the brain and spinal cord
  5. 10. They have the shortest wavelength but with the highest frequency.
  6. 12. cells of the nervous system