Chapter 10: Thermodynamics

Heat and Work

This page provides definitions, examples, and problems related to the concept of heat.

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heat.html

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heat.html

(Objective: Recognize that a system can absorb or release energy as heat in order for work to be done on or by the system and that work done on or by a system can result in the transfer of energy as heat.)

Follow these steps to build a hot air balloon and see a thermodynamic system at work.

 

http://www.msichicago.org/online-science/activities/activity-detail/activities/fly-a-hot-air-balloon/

(Objective: Recognize that a system can absorb or release energy as heat in order for work to be done on or by the system and that work done on or by a system can result in the transfer of energy as heat.)

This short video describes a radiant fryer, which emits infrared energy and can fry foods without the addition of oil or other fat.

http://www.aip.org/dbis/APS/stories/19099.html

http://www.aip.org/dbis/APS/stories/19099.html

(Objective: Recognize that a system can absorb or release energy as heat in order for work to be done on or by the system and that work done on or by a system can result in the transfer of energy as heat.)

Thermodynamic Laws

On this page, you’ll find several demonstrations and experiments related to the first and second¬†laws of thermodynamics.

http://myweb.astate.edu/jpratte/jmp7.html

http://myweb.astate.edu/jpratte/jmp7.html

(Objective: Illustrate how the first law of thermodynamics is a statement of energy conservation.)

Build a matchstick rocket and watch a tiny pyrotechnic display of thermodynamic processes!

http://www.physicscentral.com/experiment/physicsathome/match-rocket.cfm

http://www.physicscentral.com/experiment/physicsathome/match-rocket.cfm

(Objective: Illustrate how the first law of thermodynamics is a statement of energy conservation.)

The First Law of Thermodynamics

NASA’s Glenn Research Center explains the first law of thermodynamics.

http://www.grc.nasa.gov/WWW/K-12/airplane/thermo1.html

http://www.grc.nasa.gov/WWW/K-12/airplane/thermo1.html

(Objective: Illustrate how the first law of thermodynamics is a statement of energy conservation.)

The Second Law of Thermodynamics

NASA’s Glenn Research Center explains explains the second law of thermodynamics.

http://www.grc.nasa.gov/WWW/k-12/airplane/thermo2.html

http://www.grc.nasa.gov/WWW/k-12/airplane/thermo2.html

(Objective: Recognize why the second law of thermodynamics requires two bodies at different temperatures for work to be done.)

Heat Engines

A concept map about heat engines.

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatengcon.html

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatengcon.html

(Objective: Calculate the efficiency of a heat engine.)

This webpage describes the appearance of dust devils on Mars and their similarity to heat engines in the way that they draw hot air up from the surface into the cooler air above.

http://www.physicscentral.com/explore/pictures/dust.cfm

http://www.physicscentral.com/explore/pictures/dust.cfm

(Objective: Calculate the efficiency of a heat engine.)

A further description of earthly dust devils.

http://www.wrh.noaa.gov/fgz/science/dustdvl.php?wfo=fgz

http://www.wrh.noaa.gov/fgz/science/dustdvl.php?wfo=fgz

(Objective: Calculate the efficiency of a heat engine.)