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Flashcards

PHYSICS 1 FLASH CARDS

adinadavis4 Inglês 66 flashcards

PHYSICS 1 FLASH CARDS

Flashcards do conjunto (66)

  1. 1WHAT IS A LENS?A SPECIFICALLY SHAPED PIECE OF TRANSPARENT MATERIAL THAT CHANGES THE DIRECTION OF LIGHT RAYS
  2. 2WHAT IS A CONVERGING LENS?A CONVERGING LENS IS CONCAVE AND IT IS USED AS A MAGNIFYING GLASS. IT MAKES RAYS OF LIGHT COME TOGETHER
  3. 3WHAT IS THE FOCAL POINT?THE POINT AT WHICH PARALLEL RAYS ARE ROUGHT TOGETHER
  4. 4WHAT IS THE FOCAL LENGTH?THE DISTANCE BETWEEN THE LENS AND THE FOCAL POINT
  5. 5THE FATTER THE LENS......THE SHORTER THE FOCAL LENTH
  6. 6WHAT IS A VIRTUAL IMAGE?WHEN THE IMAGE IS MAGNIFIED AND THE RIGHT WAY UP
  7. 7A REFRACTING TELESCOPE HAS TWO _______ _______.CONVERGING LENSES
  8. 8THE________BRINGS RAYS OF LIGHT FROM A DISTANT OBJECT TO A POINT TO FORM AN IMAGEOBJECTIVE LENSTHE________BRINGS RAYS OF LIGHT FROM A DISTANT OBJECT TO A POINT TO FORM AN IMAGE
  9. 9THE___________ACTS AS A MAGNIFYING GLASS AND MAGNIFIES THE IMAGEEYEPIECE LENS
  10. 10HOW DOES A REFLECTING TELESCOPE WORK?USES A CURVED MIRROR TO GATHER LIGHT FROM A DISTANT OBJEST AND HAS A CONVERGING EYEPIECE LENS TO MAGNIFY THE IMAGEHOW DOES A REFLECTING TELESCOPE WORK?
  11. 11WAVES TRANSFER......ENERGY AND INFORMATION WITHOUT TRANSFERRING MATTER
  12. 12DEFINITION OF FREQUENCYTHE NUMBER OF WAVES PASSING A POINT PER SECOND (Hz)
  13. 13LABEL A WAVELABEL A WAVE
  14. 14WHAT IS A LONGITUDINAL WAVE?PARTICLES IN A LONGITUDINAL WAVE MOVE IN THE SAME DIRECTION AS THE WAVE (e.g.SOUND AND SEISMIC P WAVES)
  15. 15WHAT IS A TRANSVERSE WAVE?PARTICLES IN A TRANSVERSE WAVE MOVE AT A RIGHT ANGLE TO THE DIRECTION OF THE WAVE
  16. 16EQUATION FOR WAVE; SPEED(M/S), FREQUENCY(Hz) AND LENGTH(M)EQUATION FOR WAVE; SPEED(M/S), DISTANCE(M) AND TIME(S)EQUATION FOR WAVE; SPEED(M/S), FREQUENCY(Hz) AND LENGTH(M)EQUATION FOR WAVE; SPEED(M/S), FREQUENCY(Hz) AND LENGTH(M)
  17. 17WHAT ARE THE COLOURS (IN ORDER) OF THE VISIBLE SPECTRUM?RED-ORANGE-YELLOW-GREEN-BLUE-INDIGO-VIOLET
  18. 18HOW DID WILLIAM HERSCHEL DISCOVER INFRARED?HE USED A PRISM TO SPLIT THE COLOURS UP HE PUT A THERMOMETER THROUGH THE COLOURS AND THE HEAT INCREASED FROM VIOLET TO REDSO HE INVESTIGATED BEYOND RED AND FOUND AN EVEN BIGGER HEATING EFFECT INFRARED RADIATION.
  19. 19HOW DID JOHN RITTER DISCOVER ULTRAVIOLET?HE USED SLVER CHLORIDE WHICH TURNS BLACK WHEN LIGHT SHINES ON IT. IT TURNS BACK QUICKER ON VIOLET THAN ON RED LIGHT IT TURNED BLACK EVEN FASTER WHEN EXPOSED TO INVISIBLE RADIATION BEYOND THE VIOLET PART OF THE SPECTRUM.
  20. 20ALL ELECTROMAGNETIC WAVES ARE ___________ WAVES AND TRAVEL AT __________ SPEED IN A VACUUMALL ELECTROMAGNETIC WAVES ARE TRANSVERSE WAVES AND TRAVEL AT THE SAME SPEED IN A VACUUM
  21. 21WHAT IS THE ELECTROMAGNETIC SPECTRUM?A GROUP OF WAVES THAT HAVE DIFFERENT WAVELENGTHS AND FREQUENCIES THAT ARE PART OF A CONTINUOUS SPECTRUM. WAVES ARE PUT INTO DIFFERENT GROUPS DEPENDING ON THEIR PROPERTIES,
  22. 22NAME ALL THE WAVES IN ORDRER FROM SMALLEST FREQUENCY TO BIGGESTRADIO WAVES,MICROWAVES, INFRARED, VISIBLE LIGHT, ULTRA VIOLET, X-RAYS, GAMMA RAYS.
  23. 23LONGEST WAVE LENGTH=_____FREQUENCY ______WAVELENGTH=HIGHEST FREQUENCYLONGEST WAVE LENGTH=LOWEST FREQUENCY
    SHORTEST WAVELENGTH=HIGHEST FREQUENCY
  24. 24DANGERS AND USES- GAMMA RAYSDANGERS-CAN CAUSE MUTATIONS,CAN KILL OR CAUSE CANCER.
    USUES- STERILISE FOOD AND MEDICAL EQUIPMENT, TO DETECT AND TREAT CANCER.
  25. 25DANGER AND USES-X-RAYSDANGERS-CAN CAUSE MUTATIONS, KIL CELLS OR CAUSE CANCER
    USES-TO LOOK INSIDE OBJECTS;HUMANS LUGGAGE IN AIRPORTS
  26. 26DANGERS AND USES-ULTRAVIOLETDANGERS-SKIN DAMAGE, SKIN CANCER AND CAN DAMAGE THE EYES
    USES-SECURITY MARKS. TO DETECT FORGED BANK NOTES,DISINFECT WATRER
  27. 27USES-VISIBLE LIGHTALLOWS US TO SEE, LIHGTS AND PHOTOGRAPHY
  28. 28DANGERS AND USES-INFRAREDDANGERS-SKIN BURNS
    USES-COOKING, THERMAL IMAGING, SHORT RANGE COMMUNICATION,REMOTE CONTROLS,SECURITY SYSTEMS
  29. 29DANGERS AND USES-MICROWAVESDANGERS- HEAT WATER IN THE BODY, HEATING CELLS CAN DAMAGE OR KIL THEM
    USES-IN MOBILE PHONES FOR COMMUNICATION, COOKING
  30. 30USES-RADIO WAVESUSES-BROADCASTING TV AND RADOIO
    COMMUNICATION WITH SHIPS AND AEROPLANES AND SATELITES
  31. 31IONS ARE VERY REACTIVE AND CAN CAUSE WHAT IN THE BODY?MUTATIONSTIONS TO THE DNA CELLS THIS CAN LEAD TO CANCER
  32. 32high frequency=more energy=?more harmful
  33. 33ALL ELECTROMAGNETIC WAVES TRANSFER_______ALL ELECTROMAGNETIC WAVES TRANSFER ENERGY
  34. 34THE AMOUNT OF ENERGY TRANSFERRED DEPENDS ON THE _______ OF THE WAVE THE HIGHER THE_______THE MORE ENERGY THE WAVE TRANSFERSTHE AMOUNT OF ENERGY TRANSFERRED DEPENDS ON THE FREQUENCY OF THE WAVE THE HIGHER THE FREQUENCY THE MORE ENERGY THE WAVE TRANSFERS
  35. 35WHAT ARE THE FORMS OF IONISING RADIATION?ALPHA PARTICLES
    BETA PARTICLES
    GAMMA RAYS
  36. 36WHEN ENERGY IS TRANSFERRED BY IONISING RADIATION IT REMOVES ELECTRONS FROM AOMS TO FORM WHAT?IONS
  37. 37AS IONS ARE ERY REACTIVE WHAT CAN THEY CAUSE IN HUMANSMUTATIONS IN THE DNA CELSS AND THIS CAN LEAD TO CANCER
  38. 38WHAT CAN TOO MUCH IONISING RADIATION DO?KILL CELLS AND THAT IS WHY ITS GOOD FOR STERILISING
  39. 39HOW DID THE FIRST SCIENTISTS STUDY THE STARSWIHT THE NAKED EYE (VISIBLE LIGHT EMITTED FROM THE PLANETS
  40. 40WHY DO SOME TELESCOPES HAVE TO BE PUT ONTO SATELLITES IN SPACE?BECAUSE THE EARTHS ATMOSPHERE ABSORBS SOME WAVES ON THE ELECTROMAGNETIC SPECTRUM.
    (GAMMA AND X RAYS, ULTRA VIOLET,INFRARED AND MICROWAVES)
  41. 41HOW CAN YOU SHOW THAT SOME VISIBLE LIGGHT IS ABSORBED BY THE EARTHS ATMOSPHERE?BY USING A SPECTROMETER AND SEEING THE BLACK LINES BETWEEN THE COLOURS SHOWING THAT SOME OF THE LIGHT HAVE BEEN ABSORBED
  42. 42WHAT IS THE BIG BANG THEORY?THE BIG BANG THEORY STATES THAT THE WHOLE UNIVERSE STARTED AS A TINY PARTICLE ABOUT 13.5 BILLION YEARS AGO. THE UNIVERSE EXPANDED FROM THIS OINT IN SPACE. THE UNIVERSE IS STILL EXPANDING TODAY.
  43. 43WHAT IS THE DOPLER EFFECT?When a source moves towards an observer, the observed wavelength decreases and the frequency increases.
    When a source moves away from an observer, the observed wavelength increases and the frequency decreases.
  44. 44HOW DOES REDSHIFT PROVIDE EVIDENCE THAT THE BIG BANG THEORY IS CORRECT?IT PROVIDES EVIDENCE TO SUPPORT THE BIG BANG THEORY BECAUSE PLANETS GIVVE OF A RED TINT SHOWING US THEY ARE MOVING OUT WARDS (DOPLER EFFECT MOVING AWAY SEEMS LONGER WAVELENGTH RED TINT)
  45. 45WHAT IS THE STEADY STATE THEORY?THE STEADY STATE THEORY STATES THE UNIVERSE HAS ALWAYS EXISTED. T IS EXPANDING AND NEW MATTER IS BEING CREATED AS IT EXPANDS
  46. 46WHAT IS THE RANGE OF FREQUENCIES HUMANS CAN HEAR20-20,000 Hz
  47. 4720,000Hz IS ......ULTRASOUND
  48. 4820Hz IS......INFRASOUND
  49. 49ANIMALS SUCH AS WHALES AND ELEPHENTS USE _____SOUND FOR COMMUNITCATIONANIMALS USE INFRASOUND FOR COMMUNICATION
  50. 50HOW IS ULTRASOUND USED TO FIND HOW FAR AWAY AN OBJECT IS?ULTRASOUND IS SENT OUT THE WAVES TRAVEL UNTIL THE HIT THE OBJECT THEY ARE THEN REFLECTED BACK TO WHERE THE ULTRASOUND WAS EMITTED FROM. THEN SOMETHING WILL CALCULATE HOW FAR AWAAY IT IS BY KNOWING HOW FAST THE WAVES TRAVELED AND HOW LONG IT TOOK THE TO GET THERE AND BACK
  51. 51WHAT ARE SEISMIC WAVES CAUSED BY?EARTHQUAKES OR EXPLOSIONS
  52. 52WHAT ARE THE TWO SEISMIC WAVES?P OR S WAVES
  53. 53DESCRIBE P WAVESLONGITUDINAL WAVES
    TRAVEL FASTER THAN S WAVES
    CAN TRAVEL THROUGH SOLIDS AND LIQUIDS
  54. 54DESCRIBE S WAVESTRANSVERSE
    SLOWER THAN P WAVES
    ONLY TRAVEL THROUGH SOLIDS
  55. 55HOW DO SEISMIC WAVES HELP SCIENTISTS UNDERSTAND THE EARTHS MATERIALSSEISMIC WAVES TRAVEL THROUGH DIFFERENT MATERIALS AT DIFFERENT SPEEDS AND S WAVES DONT TRAVEL THROUGH LIQUIDS
  56. 56WHAT HAPPENS IF THE EARTH QUAKE IS BENEATH THE SEATSUNAMI
  57. 57HOW DOES AN EARTHQUAKE HAPPEN?TECTONIC PLATES MOVE BECAUSE OF CONVECTION CURRENTS IN THE MANTLE, NO GAPS BETWEEN THE PLATES SO THEIR EDGES SLIDE PAST EACH OTHER, FRICTION MEANS THEY DONT MOEVE SMOOTHLY, FORCES BUILD UNTIL THE PLATES OVERCOME THE FRICTION AND THER IS A SUDDEN JERK AS THE PLATES SPLIT.
  58. 58WHY CANT SCIENTIST PREDICT WHEN AN EARTHQUAKE WILL HAPPEN?THEY DONT KNOW HOW BIG THE FORCES ARE ANS THE DONT KNOW THE AMOUNT OF FRICTION OR HOW STRONG THEY ARE SO THEY CANT PREDICT WHEN THEY WILL SLIP
  59. 59WHAT IS RENEWABLE ENERGYENERGY EASILY REPLACED
  60. 60ADVANTAGES OR RENEWABLE ENERGYDOES NOT USUALY CAUSE POLLUTION, NO FUEL COST
  61. 61DISADVANTAGES FOR RENEWABLE ENERGYEXPENSIVE MACHINERY, SPOIL THE VIEW, CHANGE HABITATS, NOT ALWAYS AVAILABLE
  62. 62WHAT IS NON-RENEWABLE ENERGY?SOURCES OF ENERGY THAT WILL NOT LAST FOREVER
  63. 63ADVANTAGES OF FOSSIL FUELCHEAPER THAN RENEWABLE, ELECTRICITY FROM POWER STATIONS IS AVAILABLE ALL THE TIME
  64. 64DISADVANTAGES OF FOSSIL FUELSWILL EVENTUALLY RUN OUT, RELEASE CARBON DIOXIDE CONTRIBUTING TO CLIMATE CHANGE, RELEASES SULPHUR DIOXIDE CAUSES ACID RAIN,EXTRACTING AND TRANSPORTING FOSSIL FUELS CASUES MORE POLLUTION AND CHANGES THE LANDSCAPES
  65. 65ADVANTAGES OF NUCLEAR POWERPOWER STATIONS DO NOT RELEASE CARBON DIOXIDE OR ANY OTHER POLLUTING GASSES
  66. 66DISADVANTAGES OF NUCLEAR POWERTHE URANIUM USED WILL RUN OUT ONE DAY, PEOPLE WORRIED ABOUT ACCIDENTS AT THE STATION, PRODUCE RADIOACTIVE WASTE

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FlashCards sobre PHYSICS 1 FLASH CARDS, criado por adinadavis4 em 07-04-2015.
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