phenomena

NATURAL PHENOMENA
By Group K

Solar Eclipse
Occurs when
an observer
(on Earth)
passes
through the
shadow cast
by the Moon
which fully or
partially
blocks the
Sun
●
●
●
A solar eclipse
occurs when the
moon gets
between Earth
and the sun.
The moon casts a
shadow over
Earth.
A solar eclipse
can only take
place at the
phase of new
moon, when the
moon passes
directly between
the sun and Earth
and its shadows
fall upon Earth's
surface.

Tornado
a violently rotating column of air
that extends from a thunderstorm
to the ground
It's often portended by a dark,
greenish sky. Black storm clouds
gather.
reported in Great Britain, India, Argentina, and
other countries, but most tornadoes occur in
the United States.
Tornados come from thunderstorms
and they can occur whenever and
wherever conditions are right
form when warm, humid air collides with
cold, dry air. When these two air masses meet,
they create instability in the atmosphere.

THUNDER
Sound caused by lightning.
Depending on the distance from and
nature of the lightning.
Sharp, loud crack to a long, low rumble
(brontide).
Expansion of air creates a sonic shock
wave, similar to a sonic boom, often
referred to as a "thunderclap" or "peal of
thunder".
Early speculation was that it was caused
by the collision of clouds.
Sudden increase in pressure and
temperature from lightning produces
rapid expansion of the air surrounding
and within a bolt of lightning.
The accepted theory was that lightning
produced a vacuum.

SNOW
Partially frozen water vapor which
falls in flakes
Formed when temperature is low
and the moisture is high
Falls during winter
When the air temperature is below freezing,
water vapour that would normally condense
into cloud droplets will change directly into
ice without ever becoming a liquid, forming
around tiny particles in the air, such as a grain
of sand or soot.
Usually happens in regions outside
the equator line of the Earth

References
●
●
●
●
●
●
●
https://www.weatherwizkids.com/weather-tornado.htm
https://www.nationalgeographic.com/environment/natural-disasters/tornadoes/
http://scienceline.ucsb.edu/getkey.php?key=3813
http://weatherstreet.com/weatherquestions/What_causes_tornadoes.htm
https://nsidc.org/cryosphere/snow
https://www.youtube.com/watch?v=Cf6El0mI1fM&t=26s
https://www.space.com/15584-solar-eclipses.html