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9I Heat Cool @ AJHS

9I Heating and cooling @ AJHS NZ

QuestionAnswer
absolute zero the temperature at which an object's energy is minimal
anemometer a device that measures wind speed
cirrus wispy, feathery clouds
cloud seeding a method to modify precipitation so some form of precipitation will fall
condensation the process in which water vapor becomes a fluid
Conduction the transfer of energy as heat between particles as they collide within a substance or between two objects in contact.
Conductor a material through which energy can be easily transferred as heat
Convection the transfer of energy by the movement of fluids with different temperatures
Convection Current the flow of a fluid due to heated expansion followed by cooling and contraction. it is formed by the upward movement of warm air and the downward movement of cool air
Cooling System a device that transfers energy as heat out of an object to lower the object's temperature
coriolis effect the way the earth's rotation makes winds curve
cumulus clouds that look like fluffy, rounded piles of cotton
dew point the tempature at which condensation begins
droughts long periods of unusually low precipitation
electromagnetic waves a form of energy that can move through the vaccum of space. They are classified according to wavelength (remember the spectrum?)
evaporation the process by which water molecules in liquid escape into the airas water vapor
global winds winds that blow steadily from specific directions over long distances
greenhouse effect the process in which gases hold heat in the air
heat the transfer of thermal energy from a hotter object to a cooler object
Heating System a device that transfers energy as heat to a substance to raide the temperature of the substance
humidity a measure of the amount of water vapour in the air
infrared radiation has wavelengths that are longer than red light. This type of electromagnetic radiation is not visible, but it can be felt as heat
Insulator a material that is a poor energy conductor
jet streams a type of wind about 10 km abouve the earths surface are bands of high speed winds called _____________.
land breeze the flow of air from the land to a body of water
latitude distance from the equator measured in degrees
local winds winds that blow over short distances
precipitation any form of water that falls from the clouds and reaches earth's surface
psychrometer a device to measure relative humidity. has two thermometers, a wetbulb thermometer and a dry- bulb thermometer.
radiation the direct transfer of energy by electromagnetic waves
Refigerant a substance used in cooling systems that transfers large amounts of energy as it changes state
relative humidity the percentage of water vapor that is actually in the air compared to the maximum amount of water vapor the air can hold at a certain tempature
scattering a process in which dust particles and gases in the atmosphere reflect in all directions
sea breeze or lake breeze a local wind that blows from an ocean or a lake
Specific Heat the amount of energy transferred as heat that will raise the temperature of 1 kg of a substance by 1 K
stratus clouds that form in flat layers
tempature the average amount of energy of motion of each particle of a substance; a measure of the average kinetic energy of all particles within an object
heat transfer conduction, convection, and radiation
thermal energy the total energy of motion in the particles of a substance
thermometer a thin glass tube with a bulb on one end that contains liquid, usually mercury or colored alcohol. air temperature is measured with this.
ultraviolet radiation an invisible form of radiation that is shorter than violet light. it can cause sunburns, eye damage, adn skin cancer
Visible light this type of electromagnetic radiation arrives in the form of colors you can see. it has the medium wavelenghth in this chapter
water cycle the movement of water between the atmosphere and the earth's surface
wind the horizontal movement of air from an area of high pressure to an area of low pressure
wind- chill factor the increased cooling a wind can cause
Created by: johncl