đ *Measurements & Insturements* and there Uses....đđđŦđĄ
đ *(METERS)* đ
đ *Ammeter*-Electric Current.
đ *Altimeter*-In Aircrafts for measuring altitudes.
đ *Anemometer*-The speed,direction & pressure of the Wind.
đ *Audiometer*-Intensity of sound.
đ *Barometer*-Atmospheric,pressure & conditions.
đ *Bilometer*-Infra-red(heat)radiation.
đ *Cailometer*-Height of cloud base.
đ *Calorimeter*-Quantity of heat.
đ *Cathetometer*-Determines heights & levels.
đ *Chronometer*-Determines longitude of a vessel at sea.
đ *Colorimeter*-Compares intensity of colours.
đ *Cryometer*-Measurement of low temperature.
đ *Dilatometer*-Measures change in volume of substance.
đ *Evaporimeter*-Evaporation.
đ *Electrometer*-Potential difference in electric currents.
đ *Fathometer*-Depth of the ocean.
đ *Fluxmeter*-Magnetic flux.
đ *Galvanometer*-Measures electric current.
đ *Hydrometer*-The relative density of liquids.
đ *Hygrometer*-The humidity of air or any gas.
đ *Hypsometer*-Determines boiling point of liquids.
đ *Lactometer*-The relative density of milk.
đ *Luxmeter*-Intensity of sunlight.
đ *Machmeter*-Determines the speed of an aircraft relative to the speed of sound.
đ *Manometer*-Compares magnetic movement & fields.
đ *Mano meter*-Measure atmospheric pressure.
đ *Micrometer*-Coverts sound waves into electrical vibration.
đ *Nephetometer*-The scattering of light by particles suspended in a liquid.
đ *Odometer*-The wheel of a vehicle,to measure the distance travelled.
đ *Ohnmeter*-Electrical resistance of objects.
đ *Ondometer*-Frequency of electromagnetic waves (radio waves).
đ *Optometer*-Testing the refractive power for the eye.
đ *Photometer*-Compares the luminous intensity of the two sources of light.
đ *Pyrheliometer*-Measuring solar radiation.
đ *Pyrometer*-Measures very high temperature.
đ *Refractometer*-Measures salinity of solutions.
đ *Refractometer*-Measures a refractive index of a substance.
đ *Salinometer*-The salinity of a solution.
đ *Speedometer*-Measuring speed of the vehicle.
đ *Spherometer*-Curvature of spherical objects.
đ *Sphygmomanometer*-Measures blood pressure.
đ *Tachometer*-Determine speed,especially the rotational speed of a shaft (rpm)
đ *Tangent Galvanometer*-The amount of direct current (DC)
đ *Telemeter*-Records physical happenings at a distante place (Space)
đ *Thermometer*-Measures temperature.
đ *Tonometer*-The pitch of a sound.
đ *Venturimeter*-The rate of flow of liquids.
đ *Viscometer*-Viscosity of liquid.
đ *Voltmeter*-Electric potential difference between two points.
đ *Wattmeter*-Electric power.
đ *Wavemeter*-Wave length of a radiowave (High frequency waves).
đ *(GRAPHS)*
đ *Barograph*-Continuous recording of atmosperic pressure.
đ *Cardiogram (ECG)*-Traces movements of the heart recorded on a cardiograph.
đ *Cinematograph*-Projecting pictures on the screen.
đ *Crescograph*-Measuring growth in plants.
đ *Phonograph*-Reproducing sound.
đ *Polygraph*-It simultaneously records changed in physiological processes such as heart beat,blood pressure & the respiration (Used as lie detector)
đ *Siesmograph*-Recording the force,directions,etc..of earthquakes.
đ *Heliography*-Signalling apparatur reflecting sunlight in flashes.
đ *Radiography*-Recording the intensity of radiation.
đ *Lexicograph*-Compiling of dictionary.
đ *Iconograph*-Teachings by pictures & models.
đŦ *SCOPES*đ
đŦ *Electroscope*-Detects presence of an electric charge.
đŦ *Electron Microscope*-Magnifying view of very small objects (20,000 Times)
đŦ *Endoscope*-To examine internal parts of the body.
đŦ *Hygroscope*-The changes in atmospheric humidity.
đŦ *Microscope*-Magnified view of small objects.
đŦ *Otoscope*-Visual examination of the eardrum.
đŦ *Periscope*-To view objects above sea level.
đŦ *Spectroscope*-Spectrum analysis.
đŦ *Stethoscope*-Hearing & analysing the sound of heart,lungs.
đŦ *Telescope*-Magnified view of distant objects.
đŦ *Kaleidoscope*-Tube containing mirrors & pieces of coloured glass etc.producing changing reflected patterns when shaken.
đŦ *Oscilloscope*-Viewing oscillations by a display on the screen of a cathode-ray tube.
đ *Other measurements*đ
đ *Sunshine Recorder*-Duration of bright sunlight.
đ *Binoculars*-An optical used for magnified view of distant objects.
đ *Callipers*-Measures diameter of thin cylinder/wire.
đ *Carburettor*-Used for changing air with petrol vapours in an internal combustion engine.
đ *Commutator*-Generators to reserve the direction of electric current.
đ *Cyclotron*-Accelerating changed particles in microwave oscillator.
đ *Dynamo*-Coverts mechanical energy into electrical energy.
đ *Gramophone*-To reproducing recorded sound.
đ *Hydrophone*-Measure sound under water.
đ *Microphone*-Converts sound waves into electrical signals.
đ *Quadrant*-Altitudes & angles in navigation & astronomy.
đ *Radar*-Radio,detection & ranging.
đ *Rain Gange*-Measures rainfall.
đ *Sextant*-Measuring angular distance between two objects.
đ *Thermostat*-Automatically regulates temperatures at a constant point.
đ *Transformer*-An apparatus used for converting high voltage to low & vice-versa without change in its frequency.
đ *Transponder*-To receive a signal & transmit a reply immediately in satellites.
đ *Vernier*-Small sub-division of scale.
đ *Wind Vane*-Wind direction.
Friday, December 1, 2017
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LGS MALAPPURAM 13/01/2018 ANSWER KEY

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