front 1 the condition of Earth’s atmosphere at a particular time and place | back 1 Weather |
front 2 the envelope of gasses that surrounds the planet | back 2 Atmosphere |
front 3 water in the form of a gas | back 3 Water vapor |
front 4 the amount of mass in a given volume of air | back 4 Density |
front 5 the result the of weight of a column of air pushing on an area | back 5 Air pressure |
front 6 an instrument that is used to measure air pressure | back 6 Barometer |
front 7 the distance above sea level | back 7 Altitude |