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http://www.weatherwizkids.com/Hurricane_formation.gif
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February 25, 2014
WRITE THESE 2 QUESTIONS IN YOUR JOURNAL AND ANSWER THEM:
1. What 3 major variables affect weather?
2. Provide an example of how conduction, convection, and radiation move heat in the atmosphere.
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What 3 major variables affect weather?
1. . Temperature
Well where on Earth is the temperature (heat) greatest? Where is the least heat? Why?
2. Humidity – amount of moisture in the air. Hygrometer measures this.
3. Air Pressure – force exerted by tiny air particles. Measured with Barometer
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How is Heat from the Sun transferred through the Atmosphere
The sun's energy moves through space, then through the earth's atmosphere and finally reaches the earth's surface. The sun's radiation warms the earth's atmosphere and surface and becomes heat (thermal) energy. This heat energy is transferred through the atmosphere by one of three mechanisms:1. Radiation2. Conduction3. Convection
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Conduction, Convection & Radiation Cause Weather
Radiation – waves(Electromagnetic)
Convection – oceans
Conduction – air masses touch causing air to move
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Ocean Currents
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Hemisphere
Half of the terrestrial globe or celestial sphere!
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Equator
An imaginary line that wraps around Earthat 0°latitude separating the surfaceinto two equal parts!
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Axis
The imaginary line extending from the NorthPole to the South Pole going through thecenter of Earth, which is the center of Earth’s rotation.
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Tilt - 23.5 degrees
The slant of Earth’s axis, which is 23.5° from vertical
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Rotation – 24 hours
The spinning of Earth on its axisthat causes day and night to occur
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Revolution – 1 year
Earth’s year-long elliptical orbitaround the Sun.
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Seasons – Spring, Summer, Winter, Fall (Autumn)
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Seasons – cont.
Weather changes due to varied amounts of sunlight (both intensity and number of daylight hours received);
Caused by the tilt of Earth during revolution!