104 terms

CHES 5th grade weather

weather
STUDY
PLAY
water storage
Ocean, Glacier, Groundwater, Lakes, Atmosphere, Rivers
transpiration
The process in which plants give off water vapor from their leaves. The pores of the leaves are called stomata.
springs
A place where GROUNDWATER bubbles or FLOWS OUT OF CRACKS in the rocks.
aquifer
Underground layer of porous rock material containing ground water for wells and springs.
water vapor
The gas created when water evaporates.
tornado
A rapidly whirling, funnel-shaped cloud that stretches down from a storm cloud to touch the ground. It can cause a lot of destruction.
weather satellite
A spacecraft that helps meteorologists see weather systems on Earth.
weather radar
Radar that is able to detect clouds and precipitation.
latitude
Imaginary lines around the Earth parallel to the equator; measured in degrees.
dewpoint
The temperature that air must reach before condensation can occur. The air is saturated with water vapor at this point.
sleet
Precipitation that is a mixture of rain and snow.
observing
The attentive watching of something and possible recording of data.
predicting
Making a forecast of what will happen in the future based on past experience or evidence.
dew
When air becomes saturated and forms drops of water.
percolation
The process in which water soaks into the ground.
evaporation
The process by which a liquid changes into gas (water vapor).
nimbostratus clouds
A low, dark gray layer of cloud that usually produces rain or snow.
temperature
A physical property that tells you how hot or cold something is.
hurricane
A violent storm that forms over tropical (warm) ocean water with wind speed of more than 74 mph. The center of the storm is called the "eye".
Meteorologist
A scientist who studies the Earth's weather and climate.
direct sunlight
Sunlight that hits Earth at a 90 degree angle.
indirect sunlight
Sunlight that hits earth at any angle other than 90 degrees.
altitude
Height above sea level or the Earth's surface. (The temperature decreases the higher up in the air you go. Air is less dense and cannot hold the heat).
elevation
The height of an area above sea level.
high pressure
An air mass of higher than normal pressure usually associated with clear skies and beautiful ("Happy") weather. Represented by an "H" on a weather map. The winds spiral outward.
El Nino
A weather pattern created by the warming of the waters off the west coast of South America, which pushes warm waters and heavy rains toward the Americas and produces drought conditions in Australia and Asia.
greenhouse effect
The process by which the Earth's atmosphere absorbs heat.
global warming
The hypothesized rise in Earth's average temperature from excess carbon dioxide.
nimbus clouds
Rain bearing clouds that are dark and ragged at the edges.
groundwater
Water that has soaked into the ground that supplies wells and springs.
rotation
The Earth spinning around once every 24 hours, resulting in day and night; one complete turn.
revolution
The Earth moving in a path(orbit) around the sun, resulting in one Earth year (365 days).
cold front
Forms when a cold air mass moves under a warm mass & pushes the warm air upward. It creates thunderstorms but cooler air follows.
sea breeze
The movement of air caused by cool air over the ocean moving toward the land.
land breeze
The movement of air created by cool air over land moving toward the ocean.
troposphere
The layer of air in the Earth's atmosphere where weather takes place; just above the Earth's surface (ground).
stratosphere
The layer of air in the Earth's atmosphere just above the troposphere where the ozone layer is located.
prevailing westerlies
The global winds that blow constantly from west to east. They are located in the "temperate" zones on Earth.
front
The boundary between two air masses (where two air masses come together).
blizzard
A snowstorm with high winds and enough snowfall that you can only see up to 1/4 of a mile.
storm surge
A great rise of the ocean water along a shore caused by very strong winds.
cyclone
Any storm with a low pressure center that causes a circular pattern of winds to form and rotate counter-clockwise(left).
current
An ocean movement; a large stream of water that flows in the ocean.
water cycle
A continuous circulation of water in the environment through evaporation, condensation, precipitation and runoff.
cumulonimbus clouds
A type of cumulus cloud that is tall and gray and associated with thunderstorms.
microclimate
The climate of a very small area or habitat.
thunderstorms
A storm with thunder, lightening, heavy rain, and sometimes hail formed from cumulonimbus clouds.
warm front
Forms when warm air slides up and over a cold air mass; it brings gentle rain or light snow followed by warmer weather.
meteorology
The study of the Earth's atmosphere including the weather and climate.
forecast
The prediction of the weather conditions for a given area and time.
air pressure
The force or weight that air puts on objects.
low pressure
A large swirling mass of rising warm air that usually brings wet, stormy weather. The winds spiral inward.
local winds
Wind that forms in a small area due to temperature change.
prevailing winds
Global winds that blow constantly from the same direction.
anemometer
A gauge (instrument) used for measuring wind speed and direction.
hail
Precipitation that has fallen as sleet and was shot back up into the clouds and layered over and over again with ice before finally falling to the ground.
rain
Drops of fresh water that fall as precipitation from clouds.
snow
Precipitation falling from clouds in the form of ice crystals.
cumulus clouds
Fluffy, white clouds that look like cotton. They are found in the middle layers of the atmosphere and are also called "fair weather" clouds.
stratus clouds
Dark, gray clouds that form a low layer like a blanket and sometimes bring light rain or snow showers.
stationary front
When a cold and warm front meet and do not move.
flood
The overflowing of a body of water, like a river, onto the surrounding land.
Celsius scale
A temperature scale that defines the freezing point of water as 0 degrees and the boiling point of water as 100 degrees
cohesion
Sticking together
cycle
A set of events or actions that repeats.
Fahrenheit scale
A temperature scale that defines the freezing point of water as 32 degrees and the boiling point of water as 212 degrees.
freezing point
The temperature at which a liquid turns into a solid (32 degrees).
liquid
The state of a substance with no definite shape but definite volume.
occluded front
When a mass of air gets carried up above the boundary between a cool and cold air mass.
doppler radar
Helps forecasters see the movement of thunderstorms and tornadoes.
rain gauge
Instrument used to measure rainfall.
barometer
A weather instrument used for measuring air (atmospheric) pressure
fog
A cloud on the ground, A stratus cloud that forms when air is cooled to its dew point near the ground.
ozone
Absorbs harmful ultraviolet radiation from the sun in the stratosphere
absorption
Taking something in, such as, water into the ground.
accumulation
the process in which water pools in large bodies (like oceans, seas and lakes)
condensation
The part of the water cycle when water vapor turns to water droplets and forms clouds. This process changes a gas into a liquid.
precipitation
Any form of water that falls to the Earth's surface from clouds; Snow, Sleet, Rain, Hail.
atmosphere
The mixture of gases surrounding the Earth. This mass of gases is divided into several layers and is composed mainly of nitrogen and oxygen.
run-off
Water that cannot soak into the ground and instead flows across the land and accumulates in waterways.
weather
What the atmosphere is like at a given time and location (temperature, wind, clouds, precipitation).
humidity
The amount of water vapor in the air.
wind (weather) vane
A tool used to determine wind direction.
weather balloon
A tool used to gather weather information high in the atmosphere.
hygrometer
An instrument fused or measuring the amount of moisture(humidity) in the air.
thermometer
A tool used to measure temperature.
wind
Moving air
air mass
A large body of air with nearly the same temperature and level of humidity throughout
weather map
A map that uses symbols to show weather data.
climate
The average of all weather conditions through all seasons over a long period of time.
climate zone
An area that has similar average temperatures and precipitation throughout
equator
The imaginary line that divides Earth into its northern and southern hemispheres
cirrus clouds
Wispy, feathery clouds made of ice crystals that form at high altitudes (levels)
rain shadow
The low-rainfall region that exists on the leeward (downwind) side of a mountain range. This is the result of the mountain range's causing precipitation on the windward (upward) side.
leeward
Facing the direction TOWARD which the wind is blowing;
windward
Facing the direction FROM WHICH the wind is blowing. The side of the mountain range facing the wind.
longitude
Lines running north to south between the poles, used to measure distance in degrees east and west of the Prime Meridian
altostratus
Clouds at mid-level that form a light sheet that lets the sun or moon show as a bright spot.
cirrostratus
High level, very light layers of cloud.
clockwise
in the same direction as the rotating hands of a clock
counterclockwise
in the direction opposite to the rotation of the hands of a clock
hemisphere
one half of the sphere that makes up earth's surface
jet stream
a high-speed wind current moving from west to east around the earth
gulf stream
the swift, warm Atlantic current that flows from the Gulf of Mexico, around Florida, and up the east coast of North America