Gray clouds that cover the lower part of the sky; rain or snow falls from them.
What are stratus clouds?
The condition of the atmosphere at a particular time and place.
What is weather?
Most common type of storm.
What is a thunderstorm?
The boundary that forms between air masses.
What is a front?
The process of water changing into an invisible gas called water vapor.
What is evaporation?
White, puffy clouds that look like piles of cotton; they are known as fair-weather clouds.
What are cumulus clouds?
Scientists who study weather.
Who are meteorologists?
Spinning cloud with a funnel shape.
What is a tornado?
A pattern of weather that occurs in an area over a long period.
What is climate?
The amount of water vapor in the air.
What is humidity?
An instrument that shows temperature.
What is a thermometer?
The measure of force with which air particles push on matter.
What is air pressure?
An instrument that measures wind speed.
What is an anemometer?
Water overflow that is caused by a large amount of rainfall.
What is a flood?
The blanket of gases that surrounds a planet.
What is an atmosphere?
The amount of water vapor the air actually contains compared with the amount it could hold at a given temperature.
What is relative humidity?
Tall, dark clouds that mean thunderstorms with heavy rain and strong winds.
What are cumulonimbus clouds?
The weather of a place over a long time.
What is climate?
Precipitation that occurs in the form of hard, round particles of ice.
What is hail?
A very large body of air that has a similar temperature and humidity throughout.
What is an air mass?