<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Diurnal cycle - Page 1 - Wikipedia">
<p>
<a accesskey="3" href="page.php?w=diurnal_cycle_&amp;p=2">3.Next</a>
</p>
<p>A <b>diurnal cycle</b> (or <b>diel cycle</b>) is any pattern that recurs every 24 hours as a result of one full <a href="page.php?w=Earth%27s_rotation">rotation</a> of the planet <a href="page.php?w=Earth">Earth</a> around its axis. Earth's rotation causes surface <a href="page.php?w=diurnal_temperature_variation">temperature fluctuations</a> throughout the day and night, as well as <a href="page.php?w=seasonal_lag">weather changes</a> throughout the year. The diurnal cycle depends mainly on incoming <a href="page.php?w=solar_irradiance">solar radiation</a>.</p><p>
<a accesskey="3" href="page.php?w=diurnal_cycle_&amp;p=2">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
