This is when liquid water warms and changes into water vapor.
Evaporation (Boiling)
The process where water changes from one form to another and back as a part of weather is called this.
The Water Cycle
This is what you call the place where one air mass meets another air mass.
Front
This is when air pushes down on the surface of the ground.
Air Pressure
In order to make a storm, you need this much humidity.
100%
This is when water vapor cools and turns into liquid water droplets.
Condensation
The energy that starts the Water Cycle (and all weather) comes from this.
The Sun.
In this type of front, a warm air mass pushes away a cold air mass.
Warm Front
This type of pressure system usually creates clear skies.
High Pressure
In order to make a storm, you want the ground or water surface temperature to be this.
Warm or hot.
This is when liquid water cools and turns into ice, hail, or snow.
Freezing (Solidification)
When the warm ground warms up water, it turns into steam (water vapor) through a process called ________________.
Evaporation
In this type of front, a cold air mass pushes away a warm air mass.
Cold Front
This type of pressure system usually creates cloudy weather and/or storms.
Low Pressure
In order to make a storm, you want the air temperature high in the atmosphere to be this.
This is when ice, hail, or snow warms into liquid water.
Melting
Water rising or falling due to its density changing is caused by this type of heat transfer.
Convection
In this type of front, two air masses push against each other, but do not move for an extended period.
Stationary Front
This type of pressure system happens when cold, sinking air presses against the ground.
High Pressure
When ocean current temperatures are cold, coastal areas tend to be this.
Drier
This is the term for a change from one state to another due to heating, pressure, or cooling.
Phase Change
Water needs these tiny things in order to form clouds and water droplets.
CCN's (Cloud Condensation Nuclei)
In this type of front, a very cold air mass pushes away a cool air mass with warm air on top of it.
Occluded Front
This type of pressure system happens when warm, rising air lifts off the ground, reducing pressure on the ground.
Low Pressure
When ocean current temperatures are warm, coastal areas tend to be this.
Wetter