Vocab list 5 Flashcards
Water vapor in the atmosphere
Humidity
Low-altitude clouds that commonly have a top that resembles cotton balls and a dark bottom
Cumulus
Feathery clouds that are composed of ice crystals and that have the highest altitude of any cloud in the sky
Cirrus
High, dark storm clouds.
Cumulonimbus
A thick, dark cloud that covers the sky and brings continuous, steady precipitation
Nimbostratus
Clouds that have a flat, uniform base and that begin to form at very low altitudes
Stratus
The boundary between two air masses with different temperatures and humidity levels, often leading to weather changes
Front
A swirling mass of air or liquid, often associated with tornadoes or hurricanes
Vortex
A scale used to measure the intensity of tornadoes
Fujita Scale
A scale used to categorize hurricanes
Saffir-Simpson Scale
A narrow band of strong winds that blow in the upper troposphere
Jet Stream
The supercontinent that formed 300 million years ago and that began to break up 250 million years ago
Pangea
Hypothesized continental drift; thought that all continents were part of a single landmass called a supercontinent
Alfred Wegener
A measure of amount of salt in a liquid
Salinity
An instrument used to measure relative humidity
Psychrometer