Which best describes the term derived unit in si? 1.one of the metric base units that is the foundation of si 2.a conversion factor between base units 3.a specific combination of base units with its own name 4.a prefix multiplier for a base unit

A "derived unit" is a specific combination of base units with its own name. (3)

Examples:

Combination of base units                       Its own name

kilogram-meter / second²                                 Newton

Coulomb / second                                             Ampere

kilogram-meter² / second² (Newton-meter)     Joule

kilogram-meter² / second³ (Joule / sec)           Watt

i would think form in reponse to tensional forces

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.​