Chapter 2 Physical Science

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Across
  1. 2. a familiar object or idea that is used as a point of comparison to help describe or measure something less familiar
  2. 3. tells both how fast and which way it is moving
  3. 4. type of force that governs Gravity force/Electromagnetic force/Strong nuclear force/Weak nuclear force
  4. 8. the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit
  5. 10. Law of ____ of Momentum the total momentum of objects in a closed system is constant unless acted on by an outside force
  6. 13. the transfer of heat or energy through direct contact of particles in a solid
  7. 15. Scientific ____ a statement that describes what always happens in nature under certain conditions
  8. 16. A measure of how much momentum changes when a force acts for a certain time
  9. 17. relating to motion energy an object has due to its movement
  10. 19. the SI unit of absolute temperature starting at absolute zero
  11. 22. is the tendency of energy and matter to spread out into disorder making energy less useful for work
  12. 24. the transfer of energy by electromagnetic waves
  13. 25. Newtons ___ Law An object at rest remains at rest and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force
  14. 26. First Law of ____ energy cannot be created or destroyed, only changed from one form to another
  15. 28. the amount of heat required to raise the temperature of one gram of water by one degree Celsius
  16. 29. Latent heat of ______ the amount of heat required to change a substance from liquid to gas at constant temperature
Down
  1. 1. the transfer of heat by the movement of fluids due to differences in temperature and density
  2. 4. Second Law of Thermodynamics in any energy transfer some energy becomes ___ for work increasing the entropy of the universe
  3. 5. The rate of change of velocity
  4. 6. Newtons ___ Law the acceleration of an object depends on the mass of the object and the amount of force applied
  5. 7. Kinetic _____ Theory states the idea that matter is made of tiny particles in constant motion and this motion explains properties like temperature and pressure
  6. 9. Newtons ____ Law For every action there is an equal and opposite reaction
  7. 11. the smallest unit of an element that retains the element’s properties
  8. 12. two or more atoms chemically bonded together
  9. 13. type of force that causes an apparent outward force that seems to push an object away from the center of a circle when it is moving in a circular path
  10. 14. a pure substance made of only one kind of atom
  11. 18. Latent heat of ____ the amount of heat required to change a substance from solid to liquid at constant temperature
  12. 20. an atom or molecule that has gained or lost electrons giving it a positive or negative charge
  13. 21. distance per unit of time
  14. 23. Universal Law of ______ is Every object in the universe attracts every other object with a force depending on their masses and the distance between them
  15. 27. The tendency of an object to resist a change in its motion