8th grade physics

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Across
  1. 2. the interaction of electric forces and magnetic fields
  2. 3. The friction between surfaces, when an object such as wheel or a ball, rolls freely over a surface
  3. 9. movable inclined plane, that reduces the amount of work required to split or lift objects
  4. 11. made by wrapping a current-carrying wire around an iron core.
  5. 12. measure of how difficult it is to change the inertia of an object.
  6. 13. the force of friction between surfaces not in motion
  7. 18. Also known as the Kinetic friction, the force of friction that affects surfaces in motion
  8. 20. the combination of all forces acting on an object
  9. 21. stored in compression or stretching of elastic materials
  10. 23. process of solid becoming a liquid
  11. 24. upward force exerted by a fluid onto an object that is immersed in the fluid
  12. 25. process of gas becoming a liquid
  13. 29. The acceleration of an object is equal to the net force on an object divided by the mass of the object
  14. 31. the energy of motion
  15. 32. reduces the amount of effort required by increasing the work's distance.
  16. 33. the speed at which the force of gravity equals air resistance
  17. 39. has net force in one direction
  18. 40. the attractive force between opposite charges and the repulsive force between like changes
Down
  1. 1. measure of gravitational force.
  2. 4. matter's resistance to change in motion
  3. 5. Forces act in pairs: for every action there is an equal but opposite reaction
  4. 6. the force affecting an object in a circular motion.
  5. 7. a push or a pull
  6. 8. An object in motion will remain in motion and an object at rest will remain at rest unless there is net force acting an object
  7. 10. light waves (both visible and invisible
  8. 14. force that opposes movement between touching surfaces and always acts against the direction of motion.
  9. 15. SI unit for work
  10. 16. process of liquid becoming a solid
  11. 17. when applied force makes an object move in the same direction as the applied force.
  12. 19. vibrating molecules that affect temperature
  13. 22. process of liquid becoming a gas
  14. 26. SI unit for force
  15. 27. molecules bumping into each other to transmit sound
  16. 28. stored energy
  17. 30. cancel each other out so there is no acting force
  18. 34. the flow of electrons
  19. 35. The attractive force between objects with mass
  20. 36. si unit for power
  21. 37. rate at which work is done
  22. 38. speed with direction