physics vocab-4

temperature

the measurement used to quantify the sensations of hot and cold

fahrenheit scale

a temp scale on which water freezes at 32f and water boils at 212f

celsius scale

a temp scale on which zero equals the temp that water freezes 0c and 100 is temp that water boils 100c where C stands for celsius

thermometer

an instrument for measuring the temp typically by the rise and fall of a liquid in a tube

thermostat

a device that controls another device based on changes in temp

thermal energy

energy that comes from heat and the vibration of atoms and molecules

heat

a flow of thermal energy from one object to another object due to a temp difference

calorie

the quantity of heat required to raise the temp of one gram by 1^oc

british thermal unit (btu)

the quantity of heat it takes to increase the temp of one pound of water by 1^oc one btu is equal to 1,055 joules or 252 calories

heat- temperature rule

a rule standing that the more heat add to an object the greater the increase in temp

specific heat

have to put a lot of energy for each degree increase in temp

first law of thermodynamics

states that energy in a closed system is conserved

thermal equilibrium

a state that results when heat flows from a hot object to a cold object until they are at the same temp

latent heat

heat that cannot be sensed w/ a thermometer; the heat released when vapor condenses into a liquid