1:A pattern or grouping of stars that people imagine representing a figure, an animal or an object. 2:an object that orbits the sun, is large enough to have been rounded by its own gravity, and has cleared the area of its orbit of any debris.

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system