P1 EXAM PREP

harriet baker
Flashcards by harriet baker, updated more than 1 year ago
harriet baker
Created by harriet baker over 5 years ago
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MOCK EXAM

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Question Answer
PHYSICS P1 EXAM PREP
WHAT ARE WAVES? WAVES ARE VIBRATIONS THAT TRANSFER ENERGY FROM PLACE TO PLACE
WHAT IS A WAVELENGTH? THE WAVELENGTH OF A WAVE IS THE DIFFERENCE BETWEEN A POINT OF ONE WAVE AND THE SAME POINT ON THE NEXT WAVE.
WHAT IS THE UNIT OF FREQUENCY WAVE IS MEASURED IN? HERTZ (HZ)
INFRARED RADIATION IS ENERGY TRANSFER BY... ELECTROMAGNTIC WAVES
WHAT MATERIALS ARE THE BEST EMITTERS? METALS
WHY ARE NON-METALS POOR CONDUCTORS? THEY DONT HAVE FREE ELECTRONS
CONDUCTION OCCURS MAINLY IN WHAT STATE? A. SOLID B. LIQUID C. GAS SOLID
WHAT IS CONVECTION? CONVECTION IS THE CIRCULATION OF A FLUID (LIQUID OR GAS) CAUSED BY HEATING
... IS WHEN A GAS TURNS INTO A LIQUID EVAPORATION
WHAT ARE MICROWAVES USED FOR? SATELLITE TV SIGNALS
WHAT ORDER DOES THE ELECTROMAGNETIC SPECTRUM GO IN? 1. RADIO 2. MICROWAVE 3. INFRARED 3. VISIBLE 4. ULTRAVIOLET 5. X-RAY 6. GAMMA RAY
WHAT IS THE EQUATION FOR WAVE SPEED? FREQUENCY X WAVELENGTH
WHAT ARE THE RENEWABLE FUELS? 1. GEOTHERMAL ENERGY 2. HYDROELECTRIC ENERGY 3. BIOMASS ENERGY 4. TIDAL ENERGY 5. WAVE ENERGY 6. WIND ENERGY 7. SOLAR ENERGY
GEOTHERMAL ENERGY ADVANTAGES - RENEWABLE - NO POLLUTION - DOESNT DAMAGE THE ENVIRONMENT DISADVANTAGES - VERY FEW PLACES IN THE WORLD YOU CAN DO THIS - COSTS A LOT OF MONEY TO DRILL DEEP INTO THE GROUND
HYDROELECTRIC ENERGY ADVANTAGES - RENEWABLE - NO POLLUTION - WE CAN STORE THE WATER UP DISADVANTAGES - COSTS A LOT OF MONEY TO BUILD THE DAM - DAMS RUIN LOCAL COMUNITIES. SUCH AS KILLING PLANTS AND ANIMALS
BIOMASS ENERGY ADVANTAGES - RENEWABLE AS LONG AS WE KEEP PLANTING TREES - NO SPECIAL EQUIPMENT NEEDED - DOESNT ADD TO THE GREENHOUSE EFFECT DISADVANTAGES - LARGE AMOUNT SOF LND ARE NEEDED TO GROW THE RIGHT AMOUNT OF FREES NEEDED
TIDAL ENERGY ADVANTAGES - RENEWABLE - NO POLLUTION NOTHING GET BURNED - RELIABLE BECAUSE THERE ARE ALWAYS TWO TIDES A DAY DISADVANTAGES - THE DAM COSTS A LOT TO BUILD BUT CHEAP ONCE BUILT - THE DAM MAY CAUSE LOCAL FLOODING
WAVE ENERGY ADVANTAGES - RENEWABLE - NO POLLUTION NOTHING GETS BURNT DISADVANTAGES - NEEDS LOTS OF MACHINES TO GET A REASONABLE AMOUNT OF ENERGY - MACHINES CAN LOOK UGLY - MACHINES CAN BE DAMAGED BY STORMS - MACHINES COST A LOT
WING ENERGY ADVANTAGES - RENEWABLE - NO POLLUTION NOT GETS BURNED - TURBINES ARE QUITE CHEAP SO USED IN POORER COUNTRIES DISADVANTAGES - TURBINES CAN BE UGLY AND NOISY - ONLY WORKS IF ITS QUITE WINDY - IF THE WIND STOPD YOU GET NO ENERGY
SOLAR ADVANTAGES - RENEWABLE - NO POLLUTION NOTHING GETS BURNED DISADVANTAGES - SOLAR CELLS AND SOLAR PANELS ARE REALLY EXPENSIVE - ONLY WORKS IF ITS SUNNY
WHITE LIGHT CONTAINS ALL THE COLOURS ON THE SPECTRUM? TRUE OR FALSE? TRUE
WHAT IS A SOLAR CELL? ELECTRICAL CELL THAT PRODUCES A VOLTAGE WHEN IN SUNLIGHT SOLAR CELLS ARE NORMALLY CONNECTED TOGETHER IN SOLAR CELL PANELS.
WHAT TO WORK OUT THE EFFICIENCY? USEFUL ENERGY INPUT / TOTAL ENERGY OUTPUT
WHAT IS THE RED SHIFT? THE LIGHT WAVES ARE STRETCHED OUT IF THE STAR OR GALAXY IS MOVING AWAY FROM US. THE WAVE LENGTH OF TIME WAVES IS INCREASED.
WHAT IS THE BLUE SHIFT? THE LIGHT WAVES ARE SQUASHED TOGETHER IF THE STAR OR GALAXY IS MOVING TOWARDS US. THE WAVELENGTH OF THE WAVES IS REDUCED.
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