6th - Science Chapter 13 Weather Notes Flashcards
Scientists who study and predict weather are _____________.
Meteorologists
The atmospheric conditions, along with short-term changes, make up the ______________ of a certain place at a certain time.
Weather
Air ________________ is the measure of the average kinetic energy of molecules in the air. Molecules in warm air move ___________ than molecules in cooler air.
Temperature; faster
___________ is the pressure that a column of air exerts on the air or surface below it.
Air pressure
Air pressure decreases as altitude ______________.
Increases
A(n) _______________ is an instrument used to measure air pressure.
Barometer
_____________ is caused by air moving from an area of high pressure to an area of low pressure.
Wind
In a south wind, the wind is coming from the __________.
South
The instrument used to measure wind speed is a(n) ______________.
Anemometer
The amount of water vapor in the air is ______________.
Humidity
When air is _____________, it holds the maximum amount of water vapor possible at that _______________.
Humid; temperature
____________ is the amount of water vapor in the air compared to the maximum amount of water vapor the air can hold at the temperature.
Relative Humidity
Relative humidity is reported as a(n) ______________.
Percentage
When air near the ground becomes saturated, the water vapor condenses into liquid and forms ________.
Dew
If the temperature is below 0 degrees C, ice crystals, referred to as ____________, form.
Frost
The temperature at which air becomes fully saturated because the temperature decreases while the amount of moisture stays constant is the _______________.
Dew point
As warm air rises in the atmosphere, it ______________.
X
________________ are water droplets or ice crystals suspended in the atmosphere.
Clouds
____________ is a cloud that forms near the Earth’s surface.
Fog
_____________ clouds are flat, where, and layered.
Stratus
_____________ clouds are fluffy and are present at 2,000 to 6,000 m altitude.
Cumulus
_______________ clouds are wish and are present above 6,000 m altitude.
Cirrus
____________ is water, in liquid or solid form, that falls from the atmosphere.
Precipitation
Precipitation that falls as liquid water is ___________.
Rain
Precipitation that is solid crystals of ice is __________.
Snow
Precipitation that starts as snow and then melts and freezes again is called _____________.
Sleet
_____________ is precipitation formed when ice pellets rise and fall within a cloud, adding new layers of ice during each cycle.
Hail
The ________________ is the series of natural processes in which water continually moves among oceans, land, and the atmosphere.
Water cycle
Water enters the atmosphere as water vapor when liquid water on Earth’s surface ________________.
Evaporates
As water vapor cools, it ____________, forming liquid water.
Rises