physics

the total energy of motion of the molecule la in an object

thermal energy

the study of the flow of Heat energies

thermodynamics

a capillary tube with liquid thats calibrated to measure temperature.

thermometer

which of the following is the best conductor of heat a. wood b. water c. aluminum d. plastic

water (B)

this states that heat will always flow from hot objects to cold ones, efficiency is always less that 100% and total disorder can never decrease

2nd law

this states that it is impossible to achieve a temperature of absolute zero

3rd law

the lowest possible temperature in Kelvin scale where all molecules would stop

absolute zero

when mechanical work is done on a system there can be an increase in its a. internal energy b. temperature c. both d. neither

both (C)

the energy transferred between objects in contact as a result of temperature difference

conduction

heat that is transferred by movement of fluid

convection

the amount of disorder in a system

entropy

If 25g of hot water are added to 35g of cold water the heat lost by the hot water is ______ the heat gained by cold water a. greater than b. less than c. equal to

equal to (C)

thermal energy in motion

heat

two objects in thermal equilibrium have the same a. energy b. temperature c. heat d. force

heat (C)

a device that uses heat to do work and but is not 100% efficient and expels excess heat

heat energy

in general the entropy of a system tends to a. increase b. decrease c. remain the same d. A and C

increase (A)

the total amount of energy contained in an object

internal energy

the state that when two objects are in contact heat flows until they are in thermal equilibrium

0th law

this states that energy is never created or destroyed heat lost by an object is gained by another

1st law

a unit of measurement that was once called centigrade because there are 100 degrees between freezing and boiling points of water in this scale

Celsius

a unit of temperature in which freezing is 32 degrees

Fahrenheit

if the average kinetic energy of the particles that make up a liquid increases a. liquid changes state b. temp increases c. liquid lose heat surroundings d. all of the above

Temperature will increase (B)

which of the following has the most thermal energy a. ocean b. camp fire c. hot oven d. hot water bottle

ocean (A)

a transfer of heat energy through space by means of electromagnetic waves

radiation

a device that uses work to move heat from a cold place to a hotter one

refrigeration

what causes heat to flow a. temperature b. Thermal energy c. temp difference d. coldness

temp difference (C)

a measure of the average molecules kinetic energy

temperature