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7.1 Vocab

Vocabulary Words

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
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 becuase of decreasing temperatures while holding the amount of moisture constant
Precipitation water, in liquid or soli form, that falls from the atmophere
Water Cycle the series of natural processes in which water continually moves among oceans, land, and the atmosphere
1) What is "weather"? The atmospheric conditions, along with short-term changes, of a certian place at a certain time.
2) What are two variables for describing weather? Temperature and rainfall
3) What is a "variable"? A quantity that can change
4) What is the measure of the average "kinetic energy" of molecules in the air? It's "air temperature"
5) What is "air pressure"? The pressure that a column of air exerts on the air, or surface, below
6) When meterologist say "barometric pressure", what do they refer to? Air pressure
7) As air moves from areas of high pressure to areas of low pressure this is called what? Wind
8) What is "humidity"? The amount of water vapor in the air
9) The amount of water vapor present in the air compared to the maximum amount of water vapor the air could contain at that temperature is called what? Relative Humidity
10) How is "relative humidity" measured? With an instrument called a "psychrometer".
11) What is "dew point"? The temperature at which air is fully saturated because of decreasing temperatures while holding the amount of moisture constant
12) Water droplets or ice crystals suspended in the atmosphere are what? Clouds
13) What is "fog"? A cloud that forms near Earth's surface
14) Water, in liquid or solid form, that falls from the atmosphere is called what? Precipitation
15) What is "rain"? Precipitation that reaches Earth's surface as droplets of water
1. Rain is made out of H2O, and H2O is made out of molecules. What are molecules? Two or more atoms that are held together by chemical bonds and act as a unit
2. What state is rain in? A liquid state
3. Since rain is H2O, what is the atomic number for H and for O? H=1 , O=8
4. Since H2O is a chemical bond. What is a "chemical bond"? A force that holds two or more atoms together
5. A "chemical equation" is a discription of a reaction using element symbols and chemical formulas. Is H2O a chemical equaation? No
Created by: clarktra7805
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