WHAT ARE SUNSPOTS?
5.

Visible features on
the sun's surface, sunspots are dark regions on the photosphere where a
particularly strong portion of the sun's magnetic field has slowed the gas that
is rising to the surface. The center of a sunspot, depressed a little below the
level of the surrounding gas, exhibits a lower temperature SUNSPOT 536, just
left of center, can flare and affect Earth. The spot itself is six times wider
than our planet. than the surrounding photosphere, creating a visible spot.
Sunspots can measure up to several times Earth's diameter. Their activity
increases and decreases in an I -year cycle. Early in each cycle, most sunspots
appear near the sun's 300 N and 300 S latitudes. Later in the cycle, they occur
closer to its equator. During the low point in the cycle, called the solar
minimum, the sun goes for days or even weeks without flaring.
Photosphere: Visible
surface of the sun, from which is emitted most of the sun's light that reaches
Earth directly.
Chromosphere: Layer of the sun's
atmosphere located above the photosphere and below the corona.
Comments
Post a Comment