LightBox - Matter and Energy

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Across
  1. 3. this type of magnet can be turned on and off
  2. 5. these can be an insulator or a conductor
  3. 7. occurring naturally or in several forms
  4. 9. is relatively weak compared to other fundamental forces
  5. 11. systems pick up sound echoes coming from objects under water
  6. 13. is caused by static electricity building up in clouds
  7. 15. heat transferred by the motion of hot gas or liquid
  8. 18. the force between molecules at the surface of a liquid
  9. 19. is the rate of doing work
Down
  1. 1. the energy from movement
  2. 2. the key factor in any form of movement
  3. 4. non-crystalline solids
  4. 6. has a turning point and a pivot
  5. 8. forms when sunlight is split into different wavelengths by water droplets in the air
  6. 10. a solid that is less dense than air
  7. 12. a poor heat conductor
  8. 14. the average measure of energy within a substance
  9. 16. the densest solid that occurs naturally
  10. 17. is a viscous fluid that flows without breaking into droplets