Natural phenomena about light, Rain, Strom,thunder, night sky

1. NATURAL
PHENOMENA
Why wouid they cause us?
CBSC 8th GRADE
SCIENCE

2. • Rain ,Thunder and Lighting
• Light
• Night sky
• Earthquakes
Contents

3. What is natural phenomena
Natural phenomena refers to observable
events or occurrences that happen in the
natural world, usually without human
intervention or influence. Examples of
natural phenomena include weather
patterns, geological events such as
earthquakes and volcanic eruptions,
astronomical events such as eclipses and
meteor showers, biological phenomena such
as animal migration and plant growth, and
physical phenomena such as the formation
of crystals and the behavior of light.These
phenomena are often studied by scientists
and are used to gain a better understanding
of the natural world and how it works.

4. • Rain is a natural phenomenon that
occurs when water vapor in the
atmosphere condenses into liquid
droplets and falls to the ground.This
process is a part of the water cycle,
which is the continuous movement
of water between the atmosphere,
land, and oceans.
• Rainfall is caused by several factors,
including atmospheric temperature,
pressure
• Rain plays an important role in the
environment by providing water to
plants, animals, and humansure, and
humidity.
Rain in natural phenomena

5. Thunder and lightning
• Thunder and lightning are natural
phenomena that occur in the
atmosphere. Lightning is an electrical
discharge that occurs between the
clouds or between the cloud and the
ground, while thunder is the sound
produced by the rapid heating and
cooling of the air surrounding the
lightning bolt.
• Lightning is created by the build-up of
electrical charges within a cloud. As the
charge grows stronger,Third bullet point
here
• Thunder can be heard up to 10 miles
away from the lightning bolt that
created it.

6. The night sky is a natural phenomenon
that has fascinated humans for centuries.
It is the expanse of the dark sky above us
that is visible at night and contains stars,
planets, galaxies, and other celestial
objects.
• Stars:These are luminous celestial
objects that emit their own light and
are visible from Earth as tiny points of
light in the night sky.They are formed
from the collapse of giant clouds of gas
and dust.
• Aurora: Aurora is a natural light display
that occurs in the polar regions of the
Earth. It is caused by the interaction of
charged particles from the sun with the
Earth’s magnetic field and atmosphere
• Meteor showers:These are events in
which a large number of sky.
Night sky
Northern Lights: The Northern Lights, also known as the
Aurora Borealis, is a natural light display in the sky that
occurs in high-latitude regions. It is caused by the
interaction of the solar wind with the Earth’s magnetic field
and is a breathtaking spectacle.

7. Light plays a crucial role in many natural phenomena.
Here are a few examples
• Sunlight:The sun is the primary source of light for
life on Earth. Sunlight provides energy for
photosynthesis, which is the process by which
plants make their own food. Sunlight also provides
heat, and it drives the Earth’s climate and weather
patterns.
• Bioluminescence:This is the ability of some
organisms, such as fireflies and jellyfish, to produce
light. Bioluminescence is used for a variety of
purposes, such as attracting mates, warning
predators, and attracting prey
• Rainbow: A rainbow is a meteorological
phenomenon that is caused by the reflection,
refraction, and dispersion of light in water droplets
in the Earth’s atmosphere. Rainbows appear as a
circular arc of colors in the sky.
LIGHT IN NATURAL PHENOMENA

8. • Polarization: This is the property of light that describes the
orientation of its electric field. Polarization can be observed in
many natural phenomena, such as the reflection of light off of
water or glass, or the way that some animals are able to detect
polarized light to navigate or find food.
• Biogeochemical cycles: Light is also important in biogeochemical
cycles, such as the carbon cycle and the nitrogen cycle. In these
cycles, light is used by plants and other organisms to convert
inorganic compounds into organic compounds, which are then
consumed by other organisms and eventually returned to the
environment through various processes.

9. EARTH QUAKES
An earthquake is a natural phenomenon that
occurs when the earth's crust moves, causing
vibrations or shaking of the ground. Here are
some key aspects of earthquakes:
1.Causes: Earthquakes can be caused by a
variety of natural phenomena, including tectonic
plate movements, volcanic activity, and landslides.
The vast majority of earthquakes are caused by
the movement of tectonic plates along fault lines.
1.Magnitude: The strength of an earthquake is measured
using the Richter scale, which assigns a numerical value
to the seismic waves generated by the earthquake.
Earthquakes with a magnitude of less than 2.5 are
generally not felt, while earthquakes with a magnitude of 7
or higher can cause widespread damage and loss of life.

10. Aftershocks: Aftershocks are smaller earthquakes that occur
in the same general area as the main earthquake. These
can continue for days, weeks, or even months after the main
earthquake and can cause additional damage or disruption.
Tsunamis: Earthquakes that occur under the
ocean can sometimes cause tsunamis, which are
large waves that can travel long distances and
cause significant damage when they reach the
shore.
Prediction and mitigation: Despite significant advances in
seismology, it is still not possible to predict earthquakes
with precision. However, scientists can use historical data
and other indicators to assess the likelihood of an
earthquake occurring in a particular area. There are also
various measures that can be taken to mitigate the
damage caused by earthquakes, such as building
earthquake-resistant structures and establishing early
warning systems.