The main reason is that the USA is in the Northern Hemisphere & Australia is in the Southern Hemisphere. It has all to do with the tilt of the earth as it revolves around the Sun. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.
4" (and any subsequent words) was ignored because we limit queries to 32 words.
Lava that cools so quickly that the ions do not have time to arrange themselves into crystals with definite shape will form igneous rocks with FINE GRAINED TEXTURE. Igneous rocks are those rocks formed as a result of cooling of magma or lava.