What kind of substance has particles that are close together but can change shape depending on its container?
a. solid
b. plasma
c. liquid
d. gas

Which object is most likely represented by a dot?

Where do magnetic lines of force enter earth?

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