Download A SHORT VIDEO What is the Solar System

The Solar
System..
• OBJECTIVE-TO LEARN WHAT IS
SOLAR SYSTEM AND HOW IT
WORKS.
• OUTCOME-TO BE ABLE TO LEARN
ABOUT THE SOLAR SYSTEM.
A QUICK GLANCE AT THE SOLAR SYSTEM ..
A SHORT VIDEO
What is the Solar System ?
The Solar System consists of the Sun and those
celestial objects bound to it by gravity. These objects
are the eight planets and their 166 known moons,
four dwarf planets and billions of small bodies,
including asteroids, icy Kuiper belt objects, comets
and meteoroids,
Broadly, the charted regions of the Solar System are
the Sun, four terrestrial inner planets, the asteroid
belt, four gas giant outer planets, the Kuiper belt, the
scattered disc, and ultimately perhaps the
The Sun (Latin: Sol) is the star at the centre
of the Solar System. The Earth and other
matter (including other planets, asteroids,
meteoroids, comets, and dust) orbit the
Sun, which by itself accounts for about
99.8% of the Solar System's mass. Energy
from the Sun, in the form of sunlight and
heat, supports almost all life on Earth via
photosynthesis, and drives the Earth's
climate and weather.
Mercury is the innermost and smallest
planet in the solar system, orbiting the
Sun once every 88 days. It can only be
seen in the morning and evening
twilight. Comparatively little is known
about it; the first of two spacecraft to
approach Mercury was Mariner 10 from
1974 to 1975, which mapped only about
45% of the planet’s surface.
Venus is the second-closest planet to
the Sun, orbiting it every 224.7 Earth
days. The planet is named after Venus,
the Roman goddess of love. It is the
brightest natural object in the night sky,
except for the Moon,. Venus reaches its
maximum brightness shortly before
sunrise or shortly after sunset, for which
reason it is often called the Morning Star
or the Evening Star.
Earth is the third planet from the Sun. Earth is
the largest of the terrestrial planets in the
Solar System in diameter, mass and density. It
is also referred to as the Earth, Planet Earth
and the World. It is Home to millions of
species, including humans, Earth is the only
place in the universe where life is known to
exist. Scientific evidence indicates that the
planet formed 4.54 billion years ago, and life
appeared on its surface within a billion years.
Mars pronounced is the fourth planet from the Sun
in the Solar System. The planet is named after Mars,
the Roman god of war. It is also referred to as the
"Red Planet" because of its reddish appearance.
Mars is a terrestrial planet with a thin atmosphere,
having surface features reminiscent both of the
impact craters of the Moon and the volcanoes,
valleys, deserts and polar ice caps of Earth. It is the
site of Olympus Mons, the highest known mountain
in the Solar System, and of Valles Marineris, the
largest canyon.
JUPITER
Jupiter is the fifth planet from the Sun and the
largest planet within the Solar System. It is two and
a half times as massive as all of the other planets in
our Solar System combined. Jupiter is classified as a
gas giant, along with Saturn, Uranus and Neptune.
The planet was known by astronomers of ancient
times and was associated with the mythology and
religious beliefs of many cultures. The Romans
named the planet after the Roman god Jupiter.
When viewed from Earth, Jupiter can reach an
apparent magnitude of −2.8, making it the third
brightest object in the night sky after the Moon
and Venus.
Saturn is the sixth planet from the Sun and the second
largest planet in the Solar System, after Jupiter.
Saturn, along with Jupiter, Uranus and Neptune, is
classified as a gas giant. Saturn is named after the
Roman god Saturnus, equated to the Greek Kronos .
The planet Saturn is composed of hydrogen, with
small proportions of helium and trace elements. The
interior consists of a small core of rock and ice,
surrounded by a thick layer of metallic hydrogen and
a gaseous outer layer. The outer atmosphere is
generally bland in appearance, although long-lived
features can appear. Wind speeds on Saturn can
reach 1,800 km/h, significantly faster than those on
Jupiter,
Uranus or is the seventh planet from the Sun and
the third-largest and fourth-most massive planet
in the solar system. It is named after the ancient
Greek deity of the sky (Uranus), the father of
Kronos (Saturn) and grandfather of Zeus (Jupiter).
Though it is visible to the naked eye like the five
classical planets, it was never recognized as a
planet by ancient observers due to its dimness
and slow orbit. Sir William Herschel announced its
discovery on March 13, 1781, expanding the
known boundaries of the solar system for the first
time in modern history. This was also the first
discovery of a planet made using a telescope.
Neptune is the eighth and farthest planet from the Sun in
the Solar System. It is the fourth largest planet by
diameter, and the third largest by mass. Neptune is 17
times the mass of Earth and is slightly more massive than
its near-twin Uranus, which is 15 Earth masses and less
dense. The planet is named after the Roman god of the
sea(Posiedon).
Discovered on September 23, 1846, Neptune was the first
planet found by mathematical prediction rather than
regular observation. Neptune was found within a degree
of the predicted position. The moon Triton was found
shortly thereafter, but none of the planet's other 12
moons were discovered before the 20th century.
A star is a massive, luminous ball of plasma. The
nearest star to Earth is the Sun, which is the source
of most of the energy on Earth. Other stars are
visible in the night sky, when they are not outshone
by the Sun. Astronomers can determine the mass,
age, chemical composition and many other
properties of a star by observing its motion through
space. Other characteristics of a star are
determined by its evolutionary history, including the
diameter, rotation, movement and temperature.
The star which is closest to the Earth is the Sun.
A METEORITE
A meteorite is a natural object originating in outer
space that survives an impact with the Earth's
surface. While in space it is called a meteoroid.
When it enters the atmosphere, impact pressure
causes the body to heat up and emit light, thus
forming a fireball, also known as a meteor or
shooting star. Meteorites have been found on the
Moon and Mars.
THE MOON
The Moon is the only natural satellite of
the Earth, and the fifth largest satellite in
the Solar System. It is the largest natural satellite
of a planet in the Solar System relative to the
size of its primary, having 27% the diameter and
60% the density of Earth, resulting in 1⁄81 its mass.
The is the Earth’s nearest neighbour in space.
We can see the moon in the sky because it
reflects the light from the sun . The moon seems
to change its shape. This is because as it orbits
the earth, different parts of the sides facing us
are lit up by the sun’s light.
OUR GALAXY
On a clear night, you may be able
to see a ribbon of white across the
sky. This is the milky way. It is our
galaxy, the huge group of stars that
is our home in space. The milky way
is just one of billions of galaxies in
the universe. Galaxies come in many
shapes and sizes.
COMETS AND METEORS
Meteors are brief, bright trails in the
sky. They happen when grains of
dust from space burn up in the
earth’s air. Asteroids are much
bigger lumps of rocks. Millions of
asteroids orbit the sun between mars
and Jupiter. comets are made up
of rocks, ice and dust. When comets
come close to the sun, they may
have a glowing tail.
Planets named after the
Roman (Greek) Gods…
Mercury-the winged God
Venus-the goddess of love(Roman)
Greek- Aphrodite
Mars-the God of war(Roman)
Greek- ares
Jupiter-king of the Gods and sky(roman)
Greek- zues
Saturn- father of Jupiter(roman)
Greek-Kronos
Uranus-father of Saturn
Neptune-God of the sea(roman)
Greek-posiedon
Pluto-God of the underworld(roman)
Greek-hades
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DONE BY: THE ENVIRONMENTAL GROUP 8G5:
JUMANA,ANDREA AND FARAH