NATURAL PHENOMENA

Natural Phenomena
Group J
Tan Ee Ling 199201
Farah Naqiyah 199095
Siti Nurliyana 198970
Nur Farhah Sofia Bt. Mohd Noor Sam 199130
WAN NOORHANI BINTI WAN SARIS
199033

SNOW
Snow is formed when ice
crystals collide and stick
together
As the particles increase in size and
weight, even bigger ice crystals called
snowflakes are formed
It is related to the entire life cycle of water
that is from liquid state through solid and
finally back to vapor
Air temperature doesn’t have to be below
freezing (0°C) for it to snow
The heaviest snow fall tends to occur when the
temperature of the air is between 0-2°C. If the
temperature is > 2°C then the snowflake will begin
to melt and fall as sleet instead – warmer still, and
the precipitation turns into rain

Type of tornado
Supercell
A supercell is large long-lived
thunderstorm. It can produce some
of the largest and most violent
tornadoes.
Waterspout
A waterspout forms over water.
They usually dissipate when they hit
land.
Landspout
A landspout is similar to a
waterspout, but on land. It is weak
and is not associated with a vortex of
air from a thunderstorm.
Gustnado
A small tornado formed at a weather
front by gusts of wind.
Multiple vortex
A tornado with more than one
spinning tube of air.
TORNADO
Characteristics
- Violent windstorm
- Twisting
- Funnel shaped cloud
- Cool air overrides a
layer of warm air
- Derived from spanish
word “tomar” = to turn
How it happen
A large thunderstorm occurs in a
cumulonimbus cloud
A change in wind direction and wind
speed at high altitudes causes the air to
swirl horizontally
Rising air from the ground pushes up on
the swirling air and tips it over
The funnel of swirling air begins to suck
up more warm air from the ground
The funnel grows longer and stretches
toward the ground
When the funnel touches the ground it
becomes a tornado

ainbow
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a multicolored arc in the sky which appears when sunlight hits water droplets
can also be full circles
caused by reflection, refraction and dispersion of light
comes from an optical illusion caused by any water droplets viewed from a certain angle relative to
a light source
not located at a specific distance from the observer
When a ray of sunlight strikes a
water droplet, most of the light
bounces off its rear wall and is
reflected back
As soon as a ray of sunlight enters
a water droplet, it is split up into its
components, causing its colors to
fan out and become visible as a
spectrum of colors.
Each color is refracted in a
marginally different direction,
creating the impression of a
fan of colors

A lunar eclipse occurs
when the Moon passes
directly behind Earth
and into its shadow
LUNAR
ECLIPSE
EARTH, MOON AND SUN MUST BE IN STRAIGHT LINE
SOLAR
ECLIPSE
A solar eclipse occurs when an
observer (on Earth) passes
through the shadow cast by the
Moon which fully or partially
blocks ("occults") the Sun