Weather, weather variables, weather variables continued.
What is weather?
Weather is the atmospheric conditions, along with short-term changes, of a certain place at a certain time.
Describe humidity.
the amount of water vapor in the air.
Describe the water cycle.
The water cycle is a series of natural processes by which water continually moves among oceans, land, and the atmosphere.
Name the clouds that are high in the sky.
Cirrostratus, Cirrus, Cirrocumulus and Cumulonimbus.
What do meteorologists use to predict weather?
Meteorologists use weather variables to study and predict weather.
Describe relative humidity.
Relative humidity - the amount of water vapor present in the air compared to the maximum of water vapor the air could contain at that temperature.
Name the clouds that are in the middle of the sky.
Nimbostratus, altostratus, altocumulus and cumulonimbus.
Describe air temperature.
Air temperature is the measure of the average kinetic energy of molecules in the air. (Energy creates heat so low energy means low temperature and high energy means high temperature.)
Describe the dew point
Dew point - the temperature at which air is saturated and condensation can occur.
Name the clouds that are low in the sky.
Nimbostratus, stratus, stratocumulus, cumulus, cumulonimbus.
Describe air pressure.
Is the force that a column of air applies on the air or a surface below (also called barometric pressure).
Describe clouds and fog and how they form.
Clouds are water droplets or ice crystals in the atmosphere. Fog - a cloud that forms near Earth’s surface.
Describe wind.
When air moves from a high pressure area to a low pressure area, it creates wind.
Describe precipitation.
Precipitation is water, in liquid or solid form, that falls from the atmosphere.