Physical Science

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Across
  1. 3. Sun is an example of this type of heat transfer.
  2. 7. The transfer of heat between substances that are in direct contact with each other.
  3. 8. the energy an object has due to its motion; working energy
  4. 9. the amount of matter in an object, mass is not dependent on gravity and always remains the same value.
  5. 12. rate at which a body moves in a given direction
  6. 13. Plant materials or animal waste used as fuel
  7. 16. The bending of a wave as it passes at an angle from one medium to another
  8. 17. used to describe particles that can slip past each other; gas or liquid.
  9. 20. bouncing back of a wave when it hits a surface through which it cannot pass
  10. 22. Rubbing hands together is an example of this type of heat transfer.
  11. 25. in the outermost energy level of an
  12. 27. a subatomic particles with a negative charge
  13. 28. the rate of change of the velocity of an object
  14. 29. Fuels such as coal, oil, and natural gas that were formed over millions of years from decayed plants and animals
  15. 30. The interference that occurs when two waves combine to make a wave with a smaller amplitude. Crest to trough
Down
  1. 1. subatomic particles with a positive charge
  2. 2. Hot air balloon is an example of this type of heat transfer.
  3. 4. force that attracts objects to move towards the center of the earth, moon, other planet
  4. 5. Scale of temperature on which water freezes at 32° and boils at 212°.
  5. 6. subatomic particles with no charge
  6. 10. the smallest part of an element that still has the properties of the element
  7. 11. For every action there is an equal and opposite reaction
  8. 14. Form of energy that is transferred between two substances at different temperatures.
  9. 15. Occurs when an object causes a wave to change direction and bend around it
  10. 18. Electricity produced from the sun's radiation
  11. 19. The interference that occurs when two waves combine to make a wave with a larger amplitude. Crest to crest or trough to trough.
  12. 21. rate at which something moves
  13. 23. A measure of the average kinetic energy of the particles, expressed in ℉, ℃ or K.
  14. 24. Divided into 100 equal parts, between the freezing point (0°) and boiling point (100°) of water.
  15. 26. push or pull that makes an object move or change its speed or direction if it is already moving