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Glossary of Abeka 5th Science Test Chapter 8

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A person who studies the weather
Meterologist
The basic cause of all weather
Sun
The different seasons are caused by
Tilt of the earths axis
List major wind systems
Polar easterlies, prevailing westerlies, tradewinds
Continious exchange of water between the water and the atmosphere is called...
Water cycle
The process of liquid water changing into water vapor is called
evaporation
The process water vapor changing to liquid water is called
condensation
The type of water that falls from the clouds is called
precipatation
The amount of water vapor in the air is called
humidity
Air that has a 100% humidity is called
saturated
Which type of air can hold more water vapor, warm or cold?
Warm
A single large unit of air with uniform temperature and humidity is called an
air mass
The temperature at which cooling air becomes saturated and can no longer hold its water vapor is called
dewpoint
The boundary between two air masses is called a
front
Three main types of clouds
Cumulus, stratos, cirrus
Cumulus
Heap or cloud, puffy and bulgy, grows upward from warm air rising vertically
Stratus
means layer, looks flat,gray, low sheet or blanket clouds that stretch over the sky, usually bring rain
Cirrus
means wisp or curl, made from ice crystals because they are high, looks feathery and wispy, nicknamed mares tail
Nimbus
To produce rain
Alto
means mid level
Another name for cumulonimbus cloud is
thunderhead
ice crystal that falls from a cloud, melts, and hits the ground as water is
rain
ice crystal that falls from a cloud, stays frozen, and hits the ground as an ice crystal is
snow
ice crystal that falls from a cloud, melts, then refreezes in the air, and hits the ground as tiny pieces of ice is
sleet
ice crystal that falls from a cloud, melts, hits the ground as a liquid, refreezes as soon as it touches land is
freezing rain
snow that falls as individial ice crystals is called
dry snow
a small piece of ice that keeps getting blown back into a cloud, forming more and more layers of ice and becomes too heavy and falls to earth is
hail
the only type of precipatation that does not start as an ice crystal is called
tropical rain
snow that falls and melts slightly and sticks to other icecrystals to form snowflakes is
wet snow

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