Can looking at a star tell us how old it is?

No.

Explanation:

if you look at the stars you cant really tell how old they are because the have been there for the longest time and you cant really tell if they are old or not i hope this was helpful but im pretty sure it wasnt

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.​