Air Temp & Pressure
What is Air Pressure?
A measurement of the weight of the air in the atmosphere pushing down on the Earth's surface.
How is wind caused?
Wind is caused by the way the Earth is unevenly heated by the sun.
What is humidity?
What layer are Cumulus clouds in, and what are their characteristics?
The mid-level clouds, usually fluffy and round.
What is the dew point?
The temperature at which the air cannot hold any more water vapor.
How long do tornadoes last?
Last only a few minutes but cause some of the biggest damage.
What is a cold front?
A mass of cooler air pushing under a mass of warmer air.
What does a barometer measure?
What is an anemometer
An instrument that measures the speed of the wind.
What is the heat index?
The measurement of how warm the air feels in the summer due to humidity.
What layer are Stratus clouds in, and what are their characteristics?
They are the lowest level of clouds and are usually layered sheets of clouds.
What does a rain gauge tell us?
How much rain or snow has fallen during a storm or during a specific day.
What causes lighting?
It is caused by static electricity that builds up from particles rubbing together in the air.
What is a warm front?
A mass of warmer air pushing over a mass of cooler air.
What is a convection cell?
The cycle of rising, sinking, and moving air due to temp and air pressure.
What is a Hygrometer?
It is a tool that measures the amount of water vapor in the air.
What layer are Cirrus clouds in, and what are their characteristics?
The highest level of clouds and form in streaks or wisps.
When the air cannot hold any more water vapor on Earth, it causes...
Fog or mist.
How can you tell the distance of a lightning storm?
By counting the seconds between the flash and the clap.
What is a stationary front
A mass of warm air and a mass of cool air meet and either do not move or move slowly.
Name two other types of weather tools...
Windvane
Hygrometer
Thermometer
Rain Gauge
Sailing
Sports
Flying
etc.
Which holds water vapor better...cold air or warm air?
Warm air.
Why does high air pressure stop clouds from forming?
Because the air warms as it sinks and can hold more water vapor.
When air cannot hold any more water vapor in the sky, it causes...
Clouds.
(Extra chance of approval if you use a newscaster voice)
Up to you if you think the forecast dazzled the audience...
In weather reporting, what is a depression?
An area of low air pressure