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8th Science

Chapter 8, CC 3, A Beka Book

Water cycle The movement of water form the earth's surface, into the air, and back to the surface
The water cycle is the mechanism that God designed to water the earth. :)<3:)
Rain Drops of liquid water falling from clouds to the air
The most common form of precipitation is ___. rain
To meteorologists, the term ___ refers to precipitation consisting of drops of water larger than .5 millimeters in diameter. These drops are called ___. rain, raindrops
Snowflakes Grown ice crystals
Bergeron Process Cold cloud process; helps meteorologist understand why snow can fall on a mountain slope while rain falls on an adjacent valley
Collision-coalescence process In clouds with temperatures above freezing, such as the Tropics, rain seems to form by this process
Drizzle Any liquid precipitation less that .5 millimeters in diameter
Freezing rain This phenomenon occurs when supercoooled raindrops touch a freezing surface and turn into ice
A storm of freezing rain Ice storm
Ice pellets Tiny balls of ice
Sleet Precipitation of ice pellets
Snow Consists of snow flakes that fall to the ground
Dendrite The most familiar snowflake shape
Light snow = visibility of over __ mile. Moderate snow = visibility between __ and __ mile. Heavy snow = visibility of less than __ mile. 1/2; 1/4,1/2; 1/4
Flurries Brief period of light snowfall that result in little or no accumulation
Snow squall A brief but intense snowfall
Heavy snowfall Accumulates 4 inches in 12 hours or 6 inches in 24 hours
Blizzard Occurs when heavy snow and winds of at least 35 miles per hour prevail for three hours
Whiteout Visibility of almost zero
A layered ball of ice Hailstone
Hail Consists of layered balls of ice that form in strong thunderstorms which occur most often in the spring and summer
A hailstone's layers may take the form of a transparent ice called ___ or a milky ice called __. glaze, rime
When an area receives abnormally low precipitation over a relatively long period, causing a water shortage that affects the people, crops, and environment, the area is having a ___. drought
A(n) ___ ___ is defined by comparing an area's current precipitation with the area's typical precipitation and by analyzing how long the dry period lasts. meteorological drought
A(n) ___ ___usually occurs when precipitation cannot supply enough moisture to the ground to support an area's crops. agricultural drought
A(n) ___ ___ occurs when a meteorological drought affects and area's groundwater, streams, lakes, and reservoirs. hydrological drought
When meteorological, agricultural, or hydrological droughts occur, they may produce a ___ ___. Socioeconomic drought (based on the water shortage's effect on people)
Created by: nelsonclan