Vocab puzzle 1 (physics+chemistry)

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Across
  1. 3. an assemblage of electronic elements;the complete path of an electric current including usually the source of electric energy
  2. 6. an instrument for measuring in volts the differences in potential between different points of an electrical circuit
  3. 7. a substance that flows freely and is not a solid or a gas, for example water or oil
  4. 9. law a law in electricity: the strength of current is directly proportional to the voltage and inversely to the resistance
  5. 10. rain, snow, etc. that falls; a chemical process in which solid material is separated from a liquid
  6. 11. an arrangement of the parts of or elements in an electric circuit whereby the whole current passes through each part or eleme
  7. 12. principle the upward buoyant force that is exerted on a body immersed in a fluid, is equal to the weight of fluid displaced by it
  8. 14. the height to which something is elevated
  9. 15. an arrangement of electrical devices in a circuit in which each resistance being on a different branch of the circuit
  10. 16. a device that has electrical resistance and that is used in an electric circuit for protection, operation, or current control
  11. 20. a unit of force
  12. 23. a unit of pressure in the meter-kilogram-second system equivalent to one newton per square meter
  13. 24. a very small piece of matter (= a substance) with a positive electric charge that forms part of the nucleus (= central part)
  14. 25. a liquid; a substance that can flow
  15. 26. a change directly from the solid to the gaseous state without becoming liquid
  16. 27. electric potential or potential difference expressed in volts
  17. 28. a very small piece of matter (= a substance) that carries no electric charge and that forms part of the nucleus
Down
  1. 1. a very small piece of matter, such as an electron or proton , that is part of an atom
  2. 2. force the upward force exerted by any fluid upon a body placed in it
  3. 4. a movement of positive or negative electric particles (such as electrons)
  4. 5. A switch is a small control for an electrical device which you use to turn the device on or off.
  5. 8. the process of a gas changing to a liquid;drops of water that form on a cold surface when warm water vapour becomes cool
  6. 12. a meter that measures the flow of electrical current in amperes
  7. 13. a very small piece of matter (= a substance) with a negative electric charge, found in all atoms
  8. 17. it changes from a liquid state to a gas, because its temperature has increased.
  9. 18. the thickness of a solid, liquid or gas measured by its mass per unit of volume
  10. 19. the part of an atom that contains most of its mass and that carries a positive electric charge
  11. 21. any substance that is neither liquid nor solid, for example oxygen or hydrogen.
  12. 22. of definite shape and volume; not liquid or gaseous.
  13. 23. the force produced by the quantity of gas or liquid in that place or container；The amount of force exerted on a surface