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PHYSICS CHAP1
| Question | Answer |
|---|---|
| WHT TYPE OF RADATION IS GAMMA RADIATION IS... | EM RADIATION EMITTED BY UNSTABLE NUCLEUS .NO MASS AND NO CHARGE.IT IS EMITTED BY A NUCLEUS WITH TOO MUCH ENERGY FOLLOWING ALPHA AND BETA EMISSION. |
| WHN DOES GAMA REDATION OCCUR... | AFTER BETA AND ALPHA RAD.COZ NUCLEUS HAS TOO MUCH ENREGY. |
| WHAT IS THE CHARGE OF GAMMA RADIATION .... | NO CHANGE NO MASS. |
| A VERY ELUSIVE PARTICLE:WHEN THE ENERGY SPECTRUM OF BETA PARTICLE MEASURED IT WAS DISCOVERED THAT.... | |
| BETA PARTICLES RELEASED KINETIC ENERGIES UP TO A MAXIMUM THAT DEPENDS ON THE ISOTOPE. | |
| WHAT WAS THE MYSTERY ... | EITHER ENERGY WASN'T; CONSERVED IN THE CHARGE OR SOME CARRIED AWAY BY NEUTRINOS AND ANTINEUTRINOS. |
| ANTINEUTRINOS WHERE DETECTED AS A RESULT OF.... | ITS INTERACTION WITH CADMIUM NUCLEI IN LARGE TANK OF WATER. |
| WHAT PARTICLES SEEP THROUGH OUR BODIES FROM THE SUN... | THE ELUSIVE PARTICLE THE NUETRINO |
| WHTA EM WAVECAN WE SEE. LIGHT WE CAN ONLY SEE LIGHT . | OUR EYES CANNOT DETECT THE REST. |
| ALL EM RADIATION TRAVEL AT ... | SAME SPEED OF LIGHT IN A VACUUM. 1.0 X108MS-1. |
| SPEED OF WAVE.... | = WAVELENGTH AND FREQUENCY. |
| WE EXPRESSED LIGHT WAVELENGTH IN UNITS ... | NANOMETRES. |
| EM WAVE CONSIST OF.... | ELECTRIC AND MAGNETIC FEILD WHICH TRAVEL TOGETHER AND VIBRATE: TO RIGHT ANGLE TO EACH OTHER AND IN THE DIRECTION THEY ARE TRAVELLING. |
| WHT PHASE ARE ELECTRIC AND MAG WAVES IN... | IN PHASE WITH EACH OTHER.- SO YOU CAN SEE WHERE THEY REACH A PEAK TOGETHER.(IN PHASE) |
| EM WAVES ARE EMITTED BY..... | CHARGE PARTICLE WHEN IT LOSES ENERGY. |
| WHEN CAN EM WAVES BE EMMITTED ... | WHEN FAST MOVING ELECTRON IS STOPPED ( E.G.. IN X RAY TUBE ) OR SLOW DOWN OR CHANGED DIRECTION. AN ELECTRON IN SHELL OF ATOM MOVES TO DIFF SHELL OF LOWER ENERGY. |
| EACH BURST IN EM WAVES LEAVE THE SOURCE IN... | DIFF DIRECTION. EACH BURST IS A PACKET OF EM WAVES CALLED PHOTON. |
| WHAT DO EM WAVES EMITT IN DIF DIRECTIONS ... | PHOTONS. |
| WHAT IS A PHOTON ... | A PACKET OF WAVES. |
| THE PHOTON THEORY WAS ESTABLISHED BY/IN/WHEN... | EINSTEIN IN 1905 WHEN EXPLAINING PHOTOELECTRICITY. |
| WHAT IS PHOTOELCTRICITY/FROM/WHEN... | EMISSION OF ELECTRONS FROM A METAL SURFACE WHEN LIGHT DIRECTED AT SURFACE. |
| EINSTEIN IMAGINE PHOTONS TO BE LIKE ... | FLYING NEEDLES. |
| PHOTON ENERGY EQUATION ... | =HF H IS THE PLANCK CONSTANT 6.63 X10^-34JS. |
| LASER BEAM CONSIST OF PHOTONS OF ... | THE SAME FREQUENCY. |
| THE POWER OF A LASER BEAM IS THE/BY /E.G... | THE ENERGY PER SECOND TRANSFERRED BY THE PHOTONS. E.G. POWER OF THE BEAM =NHF. WHERE N IS THE NUMBER OF PHOTON PASSING A FIXED POINT EACH SEC. |
| THIS IS COZ EACH PHOTON HAS ENERGY HF. | |
| POWER OF A BEAM EQUATION ... | NHF |
| WHTA MAKES UP OUR UNIVERSE... | ANTIMATTER AND MATTER MAKE UP OUR UNIVERSE. |
| WHEN ANTIMATTER AND MATTER MEET THEY/RELEASE... | DESTROY EACH OTHER AND RADIATION IS RELEASED. |
| THE P IN PET SCANNER STANBDS FOR.... | POSITRON WHICH IS A ANTIPARTICLE OF AN ELECTRON. |
| WHAT IS A POSITRON ... | AN ANTIPARTCICLE OF AND ELECTRON. HAS POSITIVE CHARGE. |
| WHEN A PET SCANNER IS USED FOR BRAIN SCAN A P ... | A POSITRON EMITTING ISOTOPE IS ADMINISTERED TO PATIENT |
| AND SOME OF IT REACHES THE BRAIN VIA BLOOD SYSTEM. | |
| EACH POSITRON EMITTED TRAVELS NO FURTHER THAN.... | A FEW MILOMETERS BEFORE IT MEETS AN ELECTRON AND THEY ANNIHILATE EACH OTEHR. |
Created by:
ufuoma
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