GCSE Physics

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GCSE Physics
2012-09-23 08:40:13
Unit two part three currents electrical circuits one

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  1. Rub a plastic pen on your sleeve and hold is near some tiny pieces of paper what happens 
    The pen attracts the paper 
  2. Rub a plastic object on your sleeve and then near but not touching a thin stream of water from the Tap , what happens
    The water moves towards the plastic object
  3. when certain insulationg materials are rubbed against each other they become 
    • Electrically charged
    • Electrically charged objects attract small objects near them 
  4. When two electrically charged objects are brought together they
    Exert a force on each other
  5. Two charged objects may either 
    Pull towards each other (attract) or push each other away (repel)
  6. Two objects that carry the same type of charge 
  7. Two objects that carry different types of charges 
  8. A) A + charged object x and another charged object y repel each other what is thebtype of charge on y
    B) y is removed and a - charged object z is bought near to x . State whether x and z attract or repel each other 
    • A) +
    • B) attract 
  9. One strip of plastic is electrically charged and + , the other strip is uncharged , the strips of plastic are then moved close to each other , which two of the following statements are true 
    A) the strips will attract each other 
    B) the strips will repel each other 
    C) the strips will have no effect on each other 
    D) if the uncharged strip is given a + charge , the strips will attract each other 
    E) if the uncharged strip is given a + charge the strips will repel each other 
    A and E 
  10. When two different materials are rubbed against each other  - charged electrons are 
    Rubbed off one material on to the other . The material which gains electrons becomes - charged ; the material which looses electrons is leftwhich an equal + charge 
  11. Complate the sentences 
    A proton has a .... Charge 
     A Neutron has a ..... Charge 
    An electron has a ..... Charge 
    • +
    • Nuetral 
  12. Complete the following sentences 
    Every atom contains a ..... Which is + Charged . The nucleus of an atom is composed of ..... And ...... . The .... in an atom move about in the space surrounding the nucleus . An uncharged atom has equal numbers of .... And .... . An uncharged atom becomes charged as a result of transferring ...... To or from it 
    • Nucleus 
    • Protons 
    • Nutetrons 
    • Electrons 
    • Electrons 
    • Protons 
    • Electrons 
  13. A) In an experiment , an insulator becomes - charged when it is rubbed with a dry cloth . In terms electron transfer , explain why the insulator becomes - charged 
    B) explain why the insulator does not lose its charged
    • The charged electorns are rubbed off the cloth to the insulator , the insulator gains electrons and becomes - charged 
    • B) because electrons can not flow through an insulator
  14. A plastic rubber is rubbed on a duster . The ruler becomes - charged . Which two statements are true 
    A) the duster has also become - charged 
    B) the duster has gained electrons 
    C) the duster has lost electrons 
    D) the ruler has gained electrons 
    E) the ruler has lost electrons 
    C and D 
  15. A polythene rod is rubbed with a dry cloth . The rod is held close to a small electrically charged bead hanging from a string . The bead moves towards the polythene rod . Complete the sentences 
    When the rod is rubbed ...  Are rubbed off the cloth onto the rod . The surface of the rod is now ..... . The charged rid now attracts the bead because the surface of the bead is ...... . If the bead is touched it is no longer attracted to the rod because the bead has been ..... 
    • Electrons 
    • - charged 
    • + charged 
    • Discharged