The sum of the energy of a substance is the sum of the kinetic energies and potential energies of all of the molecules in the substance.

word missing in your sentence is "Mechanical"

Explanation:

The mechanical energy of a body is defined as the sum of kinetic energy plus potential energies.

The kinetic energy due to the movement and depends on the velocity squared

Potential energy is a configuration energy and the relative position of the body depends on another arbitrary point where this energy is taken as zero

 Therefore the word missing in your sentence is "Mechanical"

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

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