Atmos 1010 Exam 1 || Already Passed.

Why does the earth have an atmosphere? correct answers -Gravity -need a source of gases (volcanoes) -shielded from solar wind atmospheric composition correct answers -nitrogen 78% -oxygen 21% -water vapor 0-4% -CO2 and Methane -ozone temperature correct answers measure of the vibrational energy of molecules in solids or the average speed at which molecules in a gas (or liquid) move pressure correct answers the mass per unit volume of a substance 1 atmosphere correct answers typical pressure observed at sea level 1013.25 milibars 29.92 inches of mercury 14.69 pounds per square inch mercury barometer correct answers An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its open end resting in a dish of mercury atmosphere correct answers the envelope of gases that surround a planet and are held to it by the planet's gravitational attraction mass correct answers the amount of matter contained in a physical object volume correct answers the size or extent of a three dimensional object or region of space density correct answers the mass per unit of volume of a substance critical characteristics of the atmosphere correct answers pressure, temperature, wind (horizontal and vertical), amount of water in vapor, liquid and ice phases local scale correct answers 0-10 seconds km and minutes mesoscale correct answers 10-100 seconds km and hours synoptic scale correct answers 1000 seconds km and days planetary scale correct answers 10000 seconds km and weeks