Shared Flashcard Set

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4th six weeks test
n/a
56
Science
8th Grade
02/15/2011

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Cards

Term
Na and Cl
Definition
Most abundant elements in seawater
Term
Tidal Range
Definition
The difference between high and low tide
Term
Tide
Definition
A rise and fall in sea level
Term
Trough
Definition
Lowest part of a wave
Term
Chemosynthesis
Definition
Bacteria use sulfur to create food
Term
Wave Height
Definition
Vertical distance between the crest and trough
Term
Wavelength
Definition
The horizontal distance between the crests and/or troughs.
Term
Upwelling
Definition
A current that brings deep, cold h2o to the surface
Term
Wave
Definition
A rhythmic movement that carries energy through water
Term
Breaker
Definition
A collapsing wave
Term
Crest
Definition
Highest part of a wave
Term
Salinity
Definition
A measure of solids dissolved in seawater
Term
California Current
Definition
A cold surface current
Term
Surface Currents
Definition
Powered by global winds
Term
El Nino
Definition
Wind blowing h20 from Peru's coast, slows down and causes the eastern Pacific to warm up.
Term
Nitrogen
Definition
Most abundant dissolved gas in seawater.
Term
Gulf Stream
Definition
A 100 km wide warm water current
Term
Density Current
Definition
Forms when more dense seawater sinks beneath less dense seawater
Term
Photosynthesis
Definition
Plants use sunlight, h2o, co2, to make food+o2
Term
Thermocline
Definition
Begins at 200 m, temp drops quickly with increased depth.
Term
Meteorologist; Predictions
Definition
_____ gather information about the current weather and use computer programs to make_____about future weather patterns.
Term
Cloud wall
Definition
Part of the cloud that forms a tornado.
Term
Strength
Definition
Fujita and Pearson developed the scale so estimating tornado_____would be easier
Term
June 1st; November 30th
Definition
Hurricane season in the Atlantic begins_____and ends_____.
Term
Weather
Definition
The state of the atmosphere at a specific time and place.
Term
Wind
Definition
Air moving in a specific direction
Term
Humidity
Definition
The amount of water vapor in the air
Term
Relative Humidity
Definition
The amount of water vapor in the air compared to what it can hold at a specific temperature.
Term
Dew Point
Definition
The temperature at which air is saturated and condensation forms.
Term
Stratus
Definition
Smooth, even sheets or layers at low altitudes.
Term
Cumulus
Definition
Puffy, white clouds, often with flat bases
Term
Cirrus
Definition
High, thin, white, feathery clouds made of ice crystals
Term
Cirro
Definition
High clouds
Term
Alto
Definition
Middle-elevation clouds
Term
Strato
Definition
Low clouds
Term
Nimbus
Definition
Clouds that are dark and full of water that sunlight can't penetrate them
Term
Precipitation
Definition
Water falling from the clouds
Term
Time; Place
Definition
Weather refers to the state of the atmosphere at a specific_____ and _____
Term
Anemometer
Definition
Used to measure wind speed
Term
Air Mass
Definition
A large body of that has properties similar to the part of the Earth's surface over which it was developed
Term
Cyclones
Definition
Large, swirling areas of low pressure
Term
Front
Definition
A boundary between 2 different air masses of different density; Thunderstorms also occur along the warm, moist air masses and at_____
Term
Cloudiness; Precipitation; Storms
Definition
Sometimes occur at frontal boundaries
Term
Advancing
Definition
A Stationary front occurs when a boundary between air masses stop_____
Term
Barometer
Definition
Air pressure is measured by this
Term
Thunder
Definition
Lightning super heats the air, causing it to expand rapidly and then contract forming sound waves
Term
Tornado
Definition
A violent, whirling wind that moves in a narrow path over land
Term
Hurricane
Definition
A large, swirling, low-pressure system that forms over tropical oceans
Term
Blizzard
Definition
A winter storm with strong winds, cold temperature, and low visibility, that last more that 3 hours
Term
Warning
Definition
A _____ means that severe weather conditions already exist
Term
Warning
Definition
A _____ means that severe weather conditions already exist
Term
Weather Maps
Definition
The National Weather Service makes _____
Term
Station Models
Definition
Show weather conditions at a specific location
Term
Isotherms
Definition
Lines on a weather map connecting points of equal temperature
Term
Isobars
Definition
Lines on a weather map that connect points of equal atmospheric pressure
Term
West; East
Definition
Weather fronts move from _____ to _____
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