Air flows according to differences in thermal energy.

If a warm air mass is located in the southwest United States and a cold air mass is located in the southeast United States, from which direction will the winds blow?

A) south

B) east

C) north

D) west

there is none because earth is stationary and flat.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.  

idk i'm not smart

explanation:

t h