When energy flows as heat from a hotter object to a colder one:
a. the kinetic energy of microscopic particle motions in the hotter object decreases.
b. the kinetic energy of microscopic particle motions in the hotter object increases.
c. only thermal energy changes in each object; kinetic energy remains the same.
d. it does work on the colder object.
e. the kinetic energy of microscopic particle motions in both objects increases.
Question 2
What defines a calorie?
a. The amount of heat that raises the temperature of one ounce of water by one degree Fahrenheit.
b. The work done by the weight of one kilogram of water moving downward through a distance of one meter.
c. The amount of heat that raises the temperature of one gram of water by one degree Celsius.
d. The amount of work that raises the temperature of one gram of water by one degree Celsius.
e. The amount of work that raises the temperature of one ounce of water by one degree Fahrenheit.
Energy budget for a temperate deciduous forest (data from Gosz et al. 1978).
A turbocharger uses some of the heat energy that would normally be wasted.
Masseuse Performs Massage of the Shoulder Under Heat Lamp, c. 1925.
Energy Use by Different Country Groups
Energy pyramid
Comparing uncontrolled and controlled energy release.