Physics

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Across
  1. 4. A quantity that has both magnitude and direction.
  2. 6. A disturbance that carries energy through matter or space without transferring matter.
  3. 8. A branch of science that involves the study of matter, energy, and how they are related.
  4. 9. A lens that is thinner in the middle than at the edges.
  5. 10. The movement of an object at a constant speed around a circle with a fixed radius is called _______ circular motion.
  6. 11. The rate of change in velocity.
  7. 15. When a force is applied through a displacement, ______ is done on the system.
  8. 16. The perpendicular contact force that a surface exerts on another surface is called ______ force.
  9. 19. The amount of thermal energy needed to melt 1 kg of a substance is called the substance’s heat of _______ .
  10. 20. An explanation of things or events based on knowledge gained from many observations and investigations is called scientific _____ .
  11. 24. The transfer of thermal energy from a hotter object to a cooler object.
  12. 25. This is the upward force exerted by the fluid on an object.
  13. 26. A measure of the dispersal of energy.
  14. 27. The freezing point of water at this scale is 273.
  15. 28. The ____ law of thermodynamics states that the change in thermal energy of an object is equal to the heat that is added to the object minus the work done by the object.
  16. 29. A possible explanation for a problem using what you know and have observed.
  17. 32. A piece of transparent material, such as glass or plastic, that is used to focus light and form an image.
Down
  1. 1. ______ acceleration always points toward the center of a circle.
  2. 2. The tendency of an object to resist changes in velocity.
  3. 3. A motion that repeats in a regular cycle.
  4. 5. A comparison between an unknown quantity and a standard.
  5. 7. It causes any object to accelerate.
  6. 12. This is the ability of a system to produce a change in itself or the world around it.
  7. 13. The product of the average force on an object and the time interval over it acts.
  8. 14. This a heat transfer caused by the motion of fluid in a liquid or gas due to temperature difference.
  9. 17. ____________ wave is parallel to the direction of the wave’s travel.
  10. 18. He discovered the relationship between buoyant force and the weight of the fluid displaced by an object.
  11. 21. The rate of change in position.
  12. 22. _________’ law states that the magnitude of the force exerted by a spring is directly proportional to the distance the spring is stretched or compressed from its equilibrium position.
  13. 23. The degree of exactness of a measurement.
  14. 30. __________’s principle states that any change in pressure applied at any point on a confined fluid is transferred undiminished throughout the fluid.
  15. 31. The ______ heat of a material is the amount of energy that must be added to a unit mass of the material to raise its temperature by one temperature unit.