Thermodynamics

Transfer of heat in a gas or liquid by the motion of particles in the heated fluid

• conduction

• convection

• radiation

1200 J of heat are added to a sample of gas while the gas does 400 J of work on the environment. What is the change in internal energy of the gas?

• 800 J

• 1600 J

• -800 J

• -1600 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Transfer of heat by means of electromagnetic waves

• conduction

• convection

• radiation

During process A, from state 1 to state 2, the temperature of the ideal gas

• stays the same

• increases

• decreases

• is half as much

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Transfer of heat by contact and collisions between the molecules in a substance.

• conduction

• radiation

• convection

During an adiabatic process, a sample of gas does 400 J of work on the environment. What change occurs with the internal energy of the gas?

• The internal energy increases by 400 J.

• The internal energy doesn't change.

• The internal energy decreases by 400 J.

• There is not enough information if we don't know how much heat was added or removed.

Process B on the PV diagram is an ______________ process.

• adiabatic

• isobaric

• isochoric

• isothermal

If the temperature of a gas increases and there is negative work done on the gas, then...

• there must be heat added to the gas

• the gas must be giving off heat to the environment.

• this is an adiabatic process.

• there must be less heat added than the work done on the gas.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Warm air rises and cold air sinks demonstrates what?

• conduction
• convection
• radiation
• refrigeration

Tags

NGSS.MS-ESS2-6

The average kinetic energy of the atoms or molecules in a substance is directly related to

• heat

• specific heat capacity

• temperature

• Brownian Motion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4