Transcript Moon PowerPoint Template

PLANETS
Solar System
Our solar system consists of the
sun, eight planets, moons, dwarf
planets (or plutoids), an asteroid
belt, comets, meteors, and
others. The sun is the center of
our solar system; the planets,
their moons, the asteroids,
comets, and other rocks and
gas all orbit the sun.
Temperatures
Generally, the farther
from the Sun, the
cooler the planet.
Differences occur when
the greenhouse effect
warms a planet (like
Venus) surrounded by
a thick atmosphere
A Day on Each
of the Planets
A day is the length of time that it
takes a planet to rotate on its axis
(360°). A day on Earth takes
almost 24 hours.
The planet with the longest day is
Venus; on Venus takes 243 Earth
days. (A day on Venus is longer
than its year; a year on Venus
takes only 224.7 Earth days).
The planet with the shortest day
is changeJupiter; a day on Jupiter
only takes 9.8 Earth hours! When
you observe Jupiter from Earth,
you can see some of its features .
Earth
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 World and Terra.
Home to millions of species, including humans, Earth is the only place in
the universe where life is known to exist. The planet formed 4.54 billion
years ago, and life appeared on its surface within a billion years. Since
then, Earth's biosphere has significantly altered the atmosphere and
other abiotic conditions on the planet, enabling the proliferation of
aerobic organisms as well as the formation of the ozone layer which,
together with Earth's magnetic field, blocks harmful radiation, permitting
life on land.
Earth's Atmosphere Composition
Nitrogen
70.08
Oxygen
20.95
Other gases
0.97
Venus
Venus
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, reaching an apparent magnitude of −4.6. Because Venus is an
inferior planet from Earth, it never appears to venture far from the Sun:
its elongation reaches a maximum of 47.8°. 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.
Venus' Atmosphere Composition
•
Carbon Dioxide
96,500
•
Nitrogen
3,460
•
Other gases
Mars
Mars 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, due to iron oxide prevalent on its surface.
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.
In addition to its geographical features, Mars’ rotational period and seasonal
cycles are likewise similar to those of Earth.
Mars'
atmosphere
Composition
•
Carbon Dioxide
93.3
•
Nitrogen
2.7
•
Other gases
2.0
Pressures
• Mars
0.8
• Venus
9.32
• Earth
101.33
Solar System