Weather The condition of the atmosphere at a given place
Humidity The amount of water vapor in the air
Air Pressure The weight of the atmosphere pressing down on the Earth’s surface
Barometer A weather instrument used to measure changes in air pressure
Wind The movement of air from areas of high pressure to areas of low pressure
Global Winds Winds that blow over large areas of Earth – they blow from the tropics toward the poles
Local Winds Winds that move short distances and can change directions
Anemometer a tool that measures wind speed
Wind Vane A tool that measures wind direction
Sea Breeze Cooler, high-pressure air that flows over the water to the land
Land Breeze Cooler, high-pressure air that flows from the land to the sea
Cirrus Clouds Thin, cold clouds made up of ice crystals
Stratus Clouds Thick, wet looking clouds that cover the sky with a sheet of gray
Cumulus Clouds Puffy, white clouds that usually form in the afternoon on hot, sunny days