PLEASE HELP Answer both of them please! How do factors such as landforms affect weather patterns? Why do some air masses start as Maritime Tropical and later become Continental Tropical as they move across the United States?

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?