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Chapter 7.1

Vocab, Questions

What is weather? the atmospheric conditions, along with short-term changes, of a certain place at a certain time.
What is air pressure? pressure that a column of air exerts on the air, or surface below.
What is relative humidity? the amount of water vapor present in the air compared ot the maximum amount of water vapor the air could contain at that temperature.
What is humidity? the amount of water vapor in the air.
What is dew point? the temperature at which air is fully saturated because of decreasing temperatures while holding the amount of moisture constant.
What is precipitation? water, in liquid or solid form, that falls from the atmosphere.
What is water cycle? the series of natural processes in which water continually moves among oceans, land, and the atmosphere.
What is the average kinetic energy of molecules in the air? air temperature
What is barometric pressure? another name for air pressure
When air moves from high and low ares of high and low pressure, what is this called? wind
What is used to measure relative humidity? a psychrometer
What happens when the air gets saturated with water vapor? the water vapor will condense and form water droplets, called rain.
What happens when the temperature decreases? the air holds less moisture
What is a stratus cloud? flat, white, and layered, and altitude up to 2,000 m.
What is a cumulus cloud? fluffy, heaped, or piled up, and 2,000 to 6,000 m altitude.
What is a cirrus cloud? wispy and above 6,000 m.
What is a cloud that forms near Earth's surface? fog
Rain is what? precipitation that reaches Earth's surface as droplets of water.
What is hail? large pellets of ice.
Is precipitation important? yes
When does water vapor enter the atmosphere? when water is heated and evaporates at eh ocean's surface.
How does this cycle keep going? clouds produce precipitation, which falls to Earth's surface and later evaporates.
What is the sky made out of? matter/gases
Can precipitation be a solid? yes
Can the periodic table tell us anything about what precipitation is made out of? yes
Is there chemical reactions in the atmosphere? yes
Created by: westelau1842