SCIENCE Q2 FORCE, MOTION AND ENERGY

Cards (93)

  • Demonstrated the magnetic effect based on the direction of current.

    Andre Marie Ampere
  • Formulated the principle behind electromagnetic induction.
    Michael Faraday
  • Showed experimental evidence of electromagnetic waves and their link to light.
    Heinrich Rudolf Hertz
  • Contributed in developing equations that showed the relationship of electricity and magnetism.
    James Clerk Maxwell
  • Showed a current carrying wire behaves like a magnet.
    Hans Christian Oersted
  • What produces electromagnetic waves?
    Accelerating electrons
  • Are bundles of wave energy.
    Photons
  • is the unit used to measure the frequency of waves.
    Hertz
  • a ____ is a disturbance that transfers energy.
    wave
  • He formulated the Electromagnetic Wave Theory which says that an oscillating electric current should be capable of radiating energy in the form of electromagnetic waves.

    James Clerk Maxwell
  • Most EM waves are invisible to the eye but detectable. Only the ____ is seen by humans.
    Visible light
  • State the EM waves from longest to shortest wavelength.
    RMiVuXGa
  • What EM wave is sometimes called heat rays?
    Infrared
  • a disturbance in a field that carries energy and does not require a medium to travel.
    Electromagnetic wave
  • number of cycles a wave completes in one second; expressed in Hertz
    Frequency
  • short for radio detecting and ranging. A way of detecting aircrafts and ships from a distance and estimating their locations.
    Radar
  • receives radio waves and convert them back to sounds
    Radio Receivers
  • attaches information to the radio signal by modulating it.

    Radio Transmitter
  • the distance measured from one crest of a wave to the next crest or from one through to the second through.
    Wavelength
  • who discovered X-rays?

    Wilhelm Roentgen in 1895
  • The live audio and control rooms are connected by ____ for the exchange of audio and digital data signal during recording, mixing, and even editing of all audio-video elements digitally stored on hard drives.
    cables
  • Used for "referencing" or for checking what the mix would sound like on the equipment.
    headphone
  • Processor should be reasonably fast enough to record, edit, mix, store, and master a copy of the record.
    computer unit
  • Microphones and musical instruments are plugged into this, which is connected to the computer.
    audio interface
  • Used for playing some digital instruments, recording, adding effects, and mixing different sources of sound signals.
    digital audio software (DAW)
  • Commonly known as speakers but these give a sound close enough to the real sound input.
    studio monitor
  • Converts sound into electrical signal.
    condenser or dynamic microphone
  • Used for connecting audio interface, microphones, studio monitors, and different instruments.
    cables
  • Many of the recording technology are founded entirely or partially on the relationship between electricity and magnetism known as

    electromagnetic induction
  • Devices that detect and convert audio inputs to electric outputs or vice versa are called
    transducers
  • ____ exert either a force of repulsion or attraction. same poles repel, opposite poles attract.
    Magnets
  • If a force of ____ only is possible between an object and a magnet, then the object interacting with the magnet contains a ferromagnetic substance and is considered naturally magnetic.
    force of attraction
  • If a force of ____ is also possible between an object and a magnet, then the object interacting with the magnet may also be a permanent magnet or a temporarily magnetized ferromagnetic material.
    force of repulsion
  • Materials which are attracted by a magnet are known as ____ _____. Iron, cobalt, nickel, and many alloys of these materials like steel and alnico are magnetic.
    magnetic materials
  • Can be used to make permanent or temporary magnets unlike the non-magnetic materials which cannot.
    magnetic materials
  • One way of magnetization.
    Stroking
  • He discovered the electromagnetism during a class demonstration that a current-carrying wire caused a nearby magnetized compass needle to deflect.
    Hans Christian Oersted, a professor in the University of Copenhagen
  • He conducted his famous induction ring experiment showing that current can be produced by sources of changing magnetic fields. This is the key principle to practical generation of electricity.
    Michael Faraday
  • are sources of electric fields which result in an attraction or repulsion of other nearby charges.
    Charged particles
  • a fundamental electrical property that is either of positive or negative type to which the mutual attractions or repulsions between protons or electrons is attributed.
    Electric charge