Energy and Forces Revision Crossword

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Across
  1. 3. Relating to the size, scale or numerical amount of a vector quantity
  2. 6. The law of __________ of energy states that it “cannot be created or destroyed, only transferred”
  3. 9. An energy pathway which involves the flow of charge.
  4. 10. An energy pathway in which particles transfer energy by contact with one another.
  5. 14. The equation for efficiency = ________ energy output ÷ total energy input
  6. 15. The quantity which describes how much useful energy is transferred from the amount of energy input
  7. 16. Newton’s _______ Law states that “the magnitude of the acceleration is directly proportional to the force acting upon an object”
  8. 17. Newton’s _______ Law states that “As object A places a force on object B, object B places and equal and opposite force (or reaction) on object A”
  9. 19. Word describing an object which is not moving or at rest
  10. 22. Newton’s ________ law states that “An object will not change its motion unless acted on by an unbalanced force”
  11. 25. Work done is the process of transferring ________.
  12. 26. When one energy store increases, another store ____________.
  13. 28. The quantity that measures how much energy is needed to heat 1kg of substance by 1 degree is called ________ heat capacity
  14. 29. The units of energy are
  15. 30. The overall efficiency of a device or system must be less than ____.
Down
  1. 1. A Force has both magnitude and __________.
  2. 2. If an object is moving at constant speed, we can say the forces acting on it are ___________.
  3. 4. Word describing an increase in speed
  4. 5. If an object begins to change its speed, the forces acting upon are _________.
  5. 7. Word describing an reduction in speed
  6. 8. The name of a force when a solid surface pushes back as part of a force pair.
  7. 11. An energy pathway which involves the application of a force.
  8. 12. The name of a force which acts to hold up a floating object on water
  9. 13. An energy ________ is when energy is transferred from one store to another.
  10. 16. A force can change the _______ of an object, for example by stretching, twisting or squeezing
  11. 18. The quantity that measures how much energy is needed to change the state of 1kg of a substance is called specific _________ heat.
  12. 19. An unbalanced force can change the _______ of a moving object, e.g accelerating or decelerating
  13. 20. When one energy store decreases, another store ____________.
  14. 21. An energy pathway in which waves transfer energy
  15. 23. The name of a force which acts on a moving object in a gas or a liquid and slows the object down
  16. 24. The equation for work done = __________ x distance.
  17. 27. The unit of measurement for work done