Presented By

IBTIDA FAIZA HASSAN

Class-IV, Roll No-40

Jessore International School

Solar System

Solar System

Our solar system has nine planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.

Pluto is the smallest, coldest, and most distant from the sun.

Smaller than earth’s moon, Pluto remains an unexplored celestial snowball 4 billion miles from the sun.

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Mars is a small rocky planet. Sometimes there are great dust storms on Mars although scientist are sure Mars once had water. Scientist believe that 3.5 billion years ago, Mars had the largest flood in the solar system. Mars also has two small moons, Phobos and Deimos.

This planet is Venus. If you would look at Venus and Earth they would look like they would be twins.

Venus is covered by thick, rapidly spinning clouds that trap surface heat, creating a scorched greenhouse-like world with temperatures hot enough to melt lead and pressure so intense that standing on Venus would feel like the pressure felt 900 meters deep in Earth’s oceans.

Earth is our home planet. It is the only planet known in our solar system that has life. Over six billion people live on Earth.

Some facts are well known. For instance, Earth is the third planet from the sun and is the fifth largest planet.

Jupiter is almost a “mini solar system.” It has many moons and rings. Jupiter is the biggest planet in our solar system. It looks a lot like a small star. In fact, if Jupiter had been between fifty to one hundred times more massive, it would have become a star rather than a planet.

This planet is Saturn. Saturn is a gas giant made mostly of hydrogen and helium. Saturn has rings that are made mostly of water ice. The particles in the rings range in size from dust mites to houses! Saturn has at least 30 satellites.

This planet is Uranus. Uranus is known as a “gas giant” because it has no solid surface. It gets it’s blue-green color from methane gas above the deep cloud layers. Methane absorbs red light and reflects blue light. Uranus has about 20 moons.

This planet is Neptune. Neptune was discovered in 1846. Neptune orbits the sun every 165 years. Neptune has the smallest diameter of our solar system’s giant gas planets (including Jupiter, Saturn, and Uranus).

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