Formative #1

THE SOLAR SYSTEM

By: Hansen A.K/ 6D

Earth is the third planet from the Sun, and the fift largest planet in the Solar system. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the world, the Blue Planet, or by its Latin name, Terra.

EARTH ~

- Spins on its axisThe Earth spins or rotates on its axis in a

counterclockwise motion, as viewed from above the North Pole. It makes one revolution in 24 hours.

The spinning of the Earth on its axis is what makes the Sun to look like it’s moving across the sky.

- SatellitesThe Earth has only one moon, while Mars has two

moons and Jupiter has 9 moons

FACTS ABOUT EARTH

SizeThe diameter of the Earth at the equator is 12,756 km (7,926 miles), and its circumference or distance around the Earth at the equator is 40,075 km (24,901 miles). GravityGravity is the force at a distance that attracts objects of mass toward each other. The force of gravity from the Earth holds down our atmosphere, oceans and everything else.

EARTH DETAILS

Any group of diverse materials can be classified by chemistry or physical properties. Chemistry refers to different materials, and physical properties refers to such things as whether the materials are solids or liquids, etc. Some physical layers in the earth consist of 2 chemical layers and some chemical layers consist of 2 physical layers.

Composition of Earth and its Appearance

Solid and liquidThe percentage composition of the Earth's solid and liquid materials (by mass) is: PercentageIron 34.6% Oxygen 29.5% Silicon 15.2% Magnesium 12.7% Nickel 2.4% Sulfur 1.9% Titanium 0.05% TemperatureThe average temperature of Earth according to NASA figures is 15°C. The hottest temperature ever recorded on our planet was 70.7°C in the Lut Desert of Iran in 2005. On the other end of the spectrum, the coldest temperature recorded on Earth was in Vostok, Antarctica at -89.2 C. If it were not for the natural greenhouse gas effect of our atmosphere, our planet would plunge to a chilly zero on the Celsius scale.

Earth’s Atmosphere & Temperature

I think earth is the right place for humans because there is 02 (oxygen) that humans need and many source of food and drink. The gravity also helps Human to balance on the ground an not float. The temperature is also very relative to our needs as it’s not THAT cold or THAT hot as we’ve got diferent seasons and weathers in different places too.

 Human Being Fare on Earth

Mass: 0.3302 x 1024 kgVolume: 6.083 x 1010 km3

Average radius: 2439.7 kmAverage diameter: 4879.4 kmDensity: 5.427 g/cm3

Escape velocity: 4.3 km/sSurface gravity: 3.7 m/s2

Visual magnitude: -0.42Natural satellites: 0Rings? – NoSemimajor axis: 57,910,000 kmOrbit period: 87.969 daysPerihelion: 46,000,000 km

Mean orbital velocity: 47.87 km/sMaximum orbital velocity: 58.98 km/sMinimum orbital velocity: 38.86 km/sOrbit inclination: 7.00°Sidereal rotation period: 1407.6 hoursLength of day: 4222.6 hoursDiscovery: Known since prehistoric timesMinimum distance from Earth: 77,300,000 kmMaximum distance from Earth: 221,900,000 kmMaximum visual magnitude: -1.9

Mercury~

Escape Velocity (km/s) : 10.36 Gravity (m/s2) : 8.802 Surface Pressure (bars) : 92 Total Mass of Atmosphere (kg) :

4.8x1020

Sidereal Rotation Period (hours) : -5832.5

Length of Day (hours) : 2802 Tropical Orbital Period (days) :

224.7 Bond Albedo : 0.750 Visual Geometric Albedo : 0.65 Visual Magnitude : -4.40 Solar Irradiance (W/m2) : 2613.9 Black-Body Temperature (K) :

231.7 Average Surface Temperature

(Celsius) : 464° Number of Moons : 0 Rings :No

Venus~

Global Magnetic Field Strength (Gs) / Tilt : - / -Discovererd : UnknownDiscovery Date : prehistory

Perihelion (106 km) : 107.5 Mean Orbital Distance (106 km ) : 108.2 Aphelion (106 km) : 108.9 Average Orbital Velocity (km/s) : 35 Orbital Inclination (from Earth's Orbit) : 3.4° Orbital Eccentricity : 0.007 Equatorial Radius (km) : 6051.8 Polar Radius (km) : 6051.8 Volume (1010 km3) : 92.843 Ellipticity (Variation from Sphere) : 0.000 Axial Tilt (from Earth's geographic North) :

177.4° Mass (1024 kg) : 4.87 Density (water=1) : 5.243

Perihelion (106 km) : 206.62 Mean Orbital Distance (106 km) : 227.92 Aphelion (106 km) : 249.23 Average Orbital Velocity (km/s): 24.13 Orbital Inclination (from Earth's Orbit) :

1.850° Orbital Eccentricity : 0.0935 Equatorial Radius (km) : 3397 Polar Radius (km) : 3375 Volume (1010 km3) : 16.318 Ellipticity (Variation from Sphere) : 0.00648 Axial Tilt (from Earth's geographic North):

25.19° Mass (1024 kg) : 0.64185 Density (water=1) : 3.933 Escape Velocity (km/s) : 5.03 Gravity (m/s2) : 3.716

Surface Pressure (bars) : 0.000636 Total Mass of Atmosphere (kg) : 2.5x1016

Sidereal Rotation Period (hours):24.6229 Length of Day (hours):24.6597 Tropical Orbital Period (days):686.980 Bond Albedo:0.306 Visual Geometric: 0.367 Visual Magnitude:-3.86 Solar Irradiance (W/m2):1367.6 Black-Body Temperature (K) : 254.3 Average Surface Temperature (Celsius) :15° Number of Moons :1 Rings? :No Global Magnetic Field Strength (Gs) / Tilt : 0.3076 /

11.4° Discoverer :Unknown Discovery Date :Prehistory

MARS

Perihelion (106 km) : 740.52 Mean Orbital Distance (106 km) : 778.57 Aphelion (106 km) : 816.62 Average Orbital Velocity (km/s): 13.07 Orbital Inclination (from Earth's Orbit) : 1.304° Orbital Eccentricity : 0.0489 Equatorial Radius (km) : 71,492 Polar Radius (km) : 66,854 Volume (1010 km3) : 143,128 Ellipticity (Variation from Sphere) : 0.06487 Axial Tilt (from Earth's geographic North):

3.13° Mass (1024 kg) : 1898.6 Density (water=1) : 1.326 Escape Velocity (km/s) : 59.5 Gravity (m/s2) : 23.1

Jupiter Surface Pressure (bars) : N/A Total Mass of Atmosphere (kg) : N/A Sidereal Rotation Period (hours):9.9250 Length of Day (hours):9.9259 Tropical Orbital Period (days): 4330.595 Bond Albedo:0.343 Visual Geometric: 0.52 Visual Magnitude: -9.40 Solar Irradiance (W/m2): 50.50 Black-Body Temperature (K) : 110.0 Average Surface Temperature (Celsius) :-110° Number of Moons :63 Rings? :Yes Global Magnetic Field Strength (Gs) / Tilt : 4.28 /

9.6° Discoverer: Unknown :Discovery Date :Prehistory

Differences document

My conclusion is that the earth is the right place for human as the gravity, food and drink source, weather and others relate to human’s needs as the other planets today were still unable to live in without the astronout suits and costume as the criterias of human’s survival are not complete.

Conclusion~

HYPERLINKED VIDEO

Earth Movie Venus MovieMars movie