Describe how sound from radio reaches all parts of them room

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Asample of a gaseous substance changes into liquid. this process is called (blank) and it takes place when heat is (blank) a gaseous system

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud