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Abrell - 7.1 HW

TermDefinition
Weather the atmospheric conditions, along with short-term changes, of a certain place at a certain time
Air pressure the pressure that a column of air exerts on the air, or surface, below it
Humidity the amount of water vapor in the air
Relative humidity the amount of water vapor present in the air compared to the maximum amount of water vapor the air could contain at that temperature
Dew point the temperature at which air is fully saturated because of decreasing temperatures while holding the amount of moisture constant
Precipitation water, in liquid or solid form, that falls from the atmosphere
Water cycle the series of natural processes in which water continually moves among oceans, land, and the atmosphere
What is liquid? matter with a definite volume but no definite shape
What is temperature? a measure of the average kinetic energy of all the particles in an object
What is water vapor? water in its gaseous form
What is the troposphere? the atmospheric layer closest to Earth's surface
What is kinetic energy? the energy an object has due to its motion
What are two variables used to describe weather? Temperature and rainfall
What does air pressure do as altitude increases? It decreases
What is air pressure measured with? A barometer
What instrument is used to measure wind speeds? An anemometer
How is humidity measured? In grams of water per cubic meter of air
What happens when air is saturated? It contains as much water vapor as possible
What is used to measure relative humidity? A psychrometer
What is relative humidity given as? A percent
What happens what air becomes saturated with water vapor? The water vapor will condense and form droplets
What are clouds? Water droplets or ice crystals suspended in the atmosphere
What is a cloud that forms near Earth's surface? Fog
What is rain? Rain is precipitation that reaches Earth's surface as droplets of water.
What forms if the temperature is above 0 degrees C
Created by: abrelmar7128