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Science L7 Physics Review

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  • Potential energy can be calculated by M x H x G . What do these stand for?
    Mass x height x gravity
  • What is current? Movement of electrons over time or number of electrons moving over time
    Movement of electrons over time
  • What is potential energy? Store energy OR used energy
    Energy waiting to be used/ stored energy
  • A series circuit has one or many pathways for electrons to flow?
    One pathway
  • Ultrasound waves can be heard by humans. True or false
    False, humans cannot hear them
  • How do atoms vibrate in a solid? A lot OR very little
    Very little
  • What energy is in the string of the bow? Elastic Potential energy OR gravitational potential energy
    Elastic potential energy
  • The higher/lower the object the more/less the potential energy
    Higher and more
  • How can we increase the electromagnetic charge? Increase the power source of make a bigger switch
    Increase the power
  • When heat is applied to an object, what happens to the material ? Contracts or expands
    Expands
  • Conduction is the movement of particles/water in two /one directions in a liquid or gas.
    particles, one
  • What factors affect the flow of electrons? Length of the cord OR how many electrons in the cord
    Length of the cord
  • Electromagnetism is used in many ways. Give an example
    Scrapyard, eye surgeon, MRI
  • Looped wires create a greater magnetic field . Yes or no
    Yes
  • Where can ultrasound be used for in the medical field?
    Seeing inside the body, like prenatal ultrasound
  • Energy is the ability to cause __________. Change OR new direction
    change
  • Materials that conduct/resist electrons allow easy flow of electrons.
    conduct
  • What is the advantage of an electromagnet?
    On and off
  • Which has the greater graviational potential energy ? The man or the cell phone?
    Man as heavier
  • A battery changes chemical potential energy to electrical potential energy. True or false
    True