josh+solar+system

= The Solar System  =



How far is each planet away from the sun:-

** ﻿Mercury: 57,909,000km **

Venus: 108,200,000km

[|] Earth: 149,600,000km

** Mars: 227,940,000 km **

[|] Jupiter: 778,400,000km

Saturn: 1,423,600,000km

** Uranus: 2,867,000,000km **

Neptune: 4,488,400,000km

** Pluto: 5,909,600,000km **

Orbit:- Orbit means – n – the path of an object as it revolves around another thing

2. The path of a celestial body or an artificial satellite as it revolves around another body.

3. One complete revolution of such a body.

4. The path of a body in a field of force surrounding another body; for example, the movement of an atomic electron in relation to a nucleus.

5. A range of activity, experience, or knowledge.

6. A range of control or influence: "What magnetism drew these quaking ruined creatures into his orbit?"

7. Either of two bony cavities in the skull containing an eye and its external structures; an eye socket.

How long does it take each planet to orbit the sun:-
 * Mercury: 88 days
 * Venus: 225 days
 * Earth: 1 year
 * Mars: 687 earth days
 * Jupiter: 12 years
 * Saturn: 29.46 earth years
 * Saturn goes around the sun once every Saturn Year, and that is only once every 29.46 Earth Years.
 * Uranus: 84.01 earth years
 * Neptune: 164.79 years, 60,190 days
 * Pluto: 300 years

What is the size of each planet:-
 * Mercury It is twice the size of earth
 * Venus is almost the same size as Earth.
 * Earth's diameter is 7,926 miles (12,756 kilometers)
 * Venus's diameter is 7,257 miles (11,677 kilometers)
 * Mars has an equatorial radius of 3,396.2 ± 0.1 km or 0.533 Earths,
 * Jupiter has an equatorial diameter of 141,700 km. (AKA: Its realy, realy big
 * Saturn has a mean diameter of approximately 120,000 kilometers, and a mass 95 times that of Earth.
 * Uranus is 51,118 kilometers in diameter
 * Neptune is the forth largest planet in the Solar System and 3.833 times larger than Earth.
 * Most of pluto is a mystery.it is only about 2/3 the size of earths moon; in fact, its closer to the astroid Ceres than mercury, the smallest planet.

Differences between Inner & Outer Planets :- Inner Planet - n. - Any of the four planets, Mercury, Venus, Earth, and Mars, whose orbits are closest to the sun.

Outer Planet - n. - Any of the four planets, Jupiter, Saturn, Uranus, and Neptune, with orbits outside that of Mars.

The inner planets are between the Sun and the Asteroid Belt, while the outer planets are farther from the Sun than the Belt.

The "inner planets" are the four rocky or "terrestrial" (Earth-like) planets closer to the Sun. The outer planets are the four larger "gas giants".

Inner planets : Mercury, Venus, Earth, Mars Outer planets : Jupiter, Saturn, Uranus, Neptune

 My Planet of choice is Venue:-
 * At its closest point to Earth, Venus is 41,840,000 km away
 * Venues atmasfear is made of: Carbon dioxide (95%), nitrogen, sulfuric acid, and traces of other elements
 * Venues is the second planet from the sun but it ranges from about 500°C +/- 32°C on the surface, it is the hottest planet in our solar system.
 * One difference between Earth and Venus is that, Venus is smaller and brighter, and Earth is bigger and dimmer.
 * Venus has many of the same elements found on Earth, but conditions there are not hospitable to human life. It is too hot and the carbon dioxide atmosphere has a crushing pressure nearly 100 times that at sea level on Earth. Under these conditions, there is also no liquid water on the planet's surface, and the only "rain" consists of sulfuric acid!
 * Floating Cities on Venus
 * Several novel proposals have suggested establishing aerial colonies 50 kilometers above the surface, where the temperature and pressure are closer to Earth's.
 * Venus rotates so slowly. It takes Venus about 243 Earth days to spin once on its axis. The slow rotation is also in a "retrograde" (clockwise) direction, from east to west.

Seasons Earth has seasons because it tilts on its axis as it rotates and rerolves around the sun. During our Summer, the southern hemisphere receives sunlight that is more direct than it is in Winter, and in Summer there are more hours of daylight.

Phases of the Moon:-

The sun sets a glare on only one part of the moon each day. During a full moon the moon reflects light towards the Earth. During a new moon the moon reflects light away from the Earth. The phases of the moon are a result of the Earth and Suns positions, as the Suns rays pass and or are blocked by Earth the passing rays reflect off the moons surface.

Gravity:- Gravity - n - force that attracts body to the centre of the earth etc: intensity of this weight importance, seriousness, solemnity

Gravity is the force that hold planet in their orbit. Also the Moon in its orbit around the Earth. Earth also has gravity which is why we don't fly off into space. Gravitational pull is stronger in larger objects. So with the Moon being much smaller than Earth, it's gravitational pull is less, 1/6 as strong.

Gravity pulls to the centre, so when the solar system was created all dust and gases crambed together to make ball shaped planets. Earth is not perfectly round. When Earth spins additional force is added so the middle of Earth bulges out a little.


 * Bibliography **

Mitho's Lit Groups 1 week to 6

Star Lab Incursion 28.10.10

[|www.kidsastronomy.com] 13.10.10

[|www.sciencemonster.com] 13.10.10

[|www.wikianswers.com] 4.11.10