Air Pressure Crossword Puzzle

QUESTIONS LIST: warm front : when warm air moves over cold air, pressure : force pushing on an area or surface, stationary front : when warm air and cold air are pushing on each other, barometer : an instrument that is used to measure air pressure, air pressure : the result of the weight of a column of air pushing down on an area, cold front : when cold air moves toward warm air and pushes it up, low altitude : more dense gas molecules = greater air pressure, elevation : the distance above sea level, high altitude : less dense gas molecules = less air pressure, volume : amount of space something takes up, mercury barometer : consists of a glass tube open at the bottom end and partially filled with mercury, mass : a measure of the amount of matter in an object, density : the amount of mass in a given volume of air, altitude : the height of an object or point in relation to sea level or ground level, atmosphere : layer of gases surrounding planet, weather : the state of the earth's conditions and atmosphere in a specific time and place