Elements of Weather
The state of Earth's atmosphere at a certain time or place.
What is weather?
A collection of small water droplets or ice crystals that are suspended in the air.
What is a cloud?
The continuous movement of water between the atmosphere, the land, the oceans, and living things.
What is the water cycle?
An instrument that measures and displays temperature.
What is a thermometer?
The temperature at which the rate of condensation equals the rate of evaporation.
What is the dew point?
A large volume of air in which temperature and moisture content are nearly the same throughout.
What is an air mass?
An instrument to measure relative humidity
What is a psychrometer?
Tiny, solid particles that are the surfaces on which water droplets condense.
What are cloud condensation nuclei?
A boundary between two air masses.
What is a front?
A result of uneven heating of the Earth's surface.
What is wind?
When an obstacle forces an air mass upward.
What is orographic lifting?
A front where a cold air mass goes under a warm air mass.
What is a cold front?
A measure of the transparency of the atmosphere
What is visibility?
A type of fog that forms when evaporation takes place into cold air that is lying over warmer water.
What is steam fog?
A pressure system in which air slowly sinks down.
What is a high-pressure system?