weather test

Precipitation is measured in

Centimeters or Inches

Humidity is measured as a

Percent

Cumulus Clouds

Associated with clear good weather

Cirrus Clouds

Associated with fair weather but can mean bad weather is in the future

Tornados need this to form

Warm moist air flowing at the bottom of the cumulonimbus clouds creating low pressure that rotates as it means winds blowing in different directions

Thunderstorms need this to form

Warm humid air rising then rapidly cooling forming dense large cumulonimbus clouds

Winter storms need this to form

Large amount of humid air rising then rapidly cooling to below 0 degrees Celsius

Cold Front

forms when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow

Occluded front

a front where a warm air mass is caught between two colder air masses and brings cool temperatures and large amounts of rain and snow

Stationary front

A boundary between air masses that don't move possibly causing rain for several days

Tool used to measure wind speed

anemometer

Tool used to measure pressure

barometer

Isobars that are far apart

Mean stable pressure and good weather (high pressure)

Wind chill

a measure of how cold it feels based on the rate of heat loss from exposed skin caused by cold and wind

Frost point

the temperature at which frost forms (temperature drops low enough that dew turns to frost)

Temperature is measured in

Celsius or Fahrenheit

Pressure is measured in

mmHg or millibars

Stratus Clouds

Associated with precipitation

Cumulonimbus Clouds

Stormy weather

Hurricanes need this to form

Warm air over the ocean in an area of low pressure drawing energy from warm humid air rising to form clouds with high winds and rain spiraling to areas of low pressure

What is Heat Index and what two things that affect it

what the temperature feels like to the human body when realtive humidity is combined with the air temperature. Also known as apparent temperature

Temperature and humidity

Warm front

a front where warm air moves over cold air and brings drizzly rain and then are followed by warm and clear weather

Tool used to measure temperature

thermometer

Tool used to measure precipitation

rain gauge

Tool used to measure humidity

hygrometer

Southwest winds move

From the southwest to the northeast (winds are named from the direction they come from to the direction they are going)

Isobars that are close together

Mean rapidly changing pressure and unstable weather (low pressure)

Dew point

The temperature at which condensation begins

What makes air temperature feel colder

the faster the windspeed the colder it feels

How is the weather different in areas of high versus low pressure

High pressure brings fair weather, clear skies, and calm air

Low pressure bring unstable air, clouds, and percipitation ranging from light drizzles to heavy storms