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weather
weather
46
Science
8th Grade
04/22/2013

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Cards

Term
What is the layer of gases that surround the earth?
Definition
atmosphere
Term
The most abundant gas in the atmosphere making up 77% of it is ___.
Definition
nitrogen
Term
The second most abundant gas in the atmosphere making up about 21% of it is _____.
Definition
oxygen
Term
What makes up a small 1% of the atmosphere?
Definition
trace gases like carbon dioxide, water vapor, argon, radon, methane and etc.
Term
What is the layer of the atmosphere near the ground, and where most of the weather occurs?
Definition
troposphere
Term
What is the band of very fast moving winds near the top of the troposphere?
Definition
jet stream
Term
What is the layer of the atmosphere which contains the UV absorbing ozone layer?
Definition
stratosphere
Term
What is the coldest layer of the atmosphere?
Definition
mesosphere
Term
What is the hottest layer of the atmosphere which contains electrically charged ions which create the aerora borealis?
Definition
thermosphere
Term
What is the last layer of the atmosphere which leads into outer space?
Definition
exosphere
Term
Water covers ___% of earth's surface.
Definition
70%
Term
The amount of water vapor in the air is referred to as _____.
Definition
humidity
Term
The amount of water vapor in the air compared to the maximum amount the air can hold at that temperature is ___.
Definition
relative humidity
Term
What type of air can hold more water vapor-warm or cold?
Definition
warm air
Term
Water going from the ground to the air and back to the ground is _____.
Definition
water cycle
Term
When the water on the ground absorbs heat it will turn into a gas called water vapor. This is what part of the water cycle?
Definition
evaporation
Term
What part of the water cycle is when water vapor gets cold and turns into a liquid?
Definition
condensation
Term
What part of the water cycle is when water in any form falls to the ground?
Definition
precipitation
Term
When plants give off water vapor through their leaves it is called _____.
Definition
transpiration
Term
The atmospheric condition at any one moment is called ____.
Definition
weather
Term
The average weather conditions over a long period of time is ___.
Definition
climate
Term
The measure of how fast air molecules move around is called _____.
Definition
temperature
Term
Air molecules move around fast and expand if the air temperature is _____.
Definition
hot
Term
Air molecules move around slowly and condense if the air temperature is ____.
Definition
cold
Term
The weight of the air on the earth's surface is called ___.
Definition
air pressure
Term
Warm air creates _____ pressure.
Definition
low
Term
Cold air creates _____ pressure.
Definition
high
Term
When water vapor rises and condenses onto dust particles in the air, this creates a ____.
Definition
cloud
Term
Air moving from one place to another is called _____.
Definition
wind
Term
What is the deflection of air to the right in the northern hemisphere and to the left in the southern hemisphere because of the earth's rotation?
Definition
Coriolis effect
Term

What is the band of fast moving winds near the top of the troposphere and they move from west to east?

 

Definition
jet stream
Term
The surface winds between 0-30 degrees north and south of the equator are called the _____.
Definition
trade winds
Term
The surface winds which blow between 30-60 degrees north and south of the equator are called _____.
Definition
prevailing westerlies
Term
The surface winds which blow from 60-90 degrees north and south of the equator are the _____.
Definition
polar easterlies
Term
A large body of air that originates over a particular area and develops characteristics of the area is a ___.
Definition
air mass
Term
The boundary between two different air masses is called a _____.
Definition
front
Term
When cold air comes into the area and pushes the warm air up quicly, it is a _____ front.
Definition
cold front
Term

What is this a symbol for?

[image]

Definition
cold front
Term

What is this a symbol for?

[image]

Definition
warm front
Term

What is this a symbol for?

[image]

Definition
stationary front
Term
What kind of weather could a cold front bring?
Definition
thunderstorm, heavy rain, and possible tornados
Term
What kind of weather could a warm front bring?
Definition
slow steady rain
Term

What kind of weather could a stationary front bring?

 

Definition
days of rain
Term
What is a violent swirling wind that makes a destructive path over land?
Definition
tornado
Term
What is a violent rotating wind that starts as an area of low pressure over the open water of the ocean?
Definition
hurricane
Term
Hurricane sare classified by their _____.
Definition
wind speed
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