Which best describes the relationship between internal energy and thermal energy?
thermal energy is a measure of the internal energy of a substance.
internal energy is a measure of the thermal energy of a substance.
internal energy is the portion of thermal energy that can be transferred.
thermal energy is the portion of internal energy that can be transferred.

The dot diagram represents the motion of the motorcycle as it moves from left to right

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Often called simply "velocity," this is the velocity of an object at a particular moment in time.