The inner (terrestrial) planetsClass 8-FGroup- GTeam members- Satrajit Chatterjee (I am the only one in the group)Team leader- Satrajit ChatterjeeThe four inner planets are:MercuryVenusEarthMars

MercuryMercury is the smallest planet in the Solar System. It is the closest planet to the sun. It makes one trip around the Sun once every 87.969 days. Mercury is one of four inner planets in the Solar System, and has a rocky body like the Earth. It has a radius of 2,439.7 km. Mercury is even smaller than some of the largest moons in the solar system. However, it has a greater mass than the largest moons in the solar system. Mercury is made of about 70% metallic and 30% silicate material. Mercury's density is the second highest in the Solar System at 5.427 g/cm, only a little bit less than Earths.VenusVenus is the second planet from the Sun. It is a terrestrial planet because it has a solid, rocky surface. Venus is sometimes called the sister planet of Earth as they are quite similar in size and gravity. Venus' atmosphere (air) is mostly carbon dioxide with clouds of sulphuric acid. Venus has no oceans because it is much too hot for water. Venus' surface is a dry desert. It is about 80% smooth, rocky plains. Two highland "continents" make up the rest of its surface area, one lying in the planet's northern hemisphere and the other just south of the equator.Description of the other inner planets

MarsMars is the fourth planet from the Sun in the Solar System and the second-smallest solid planet. Mars is rocky and cold, with polar ice caps of frozen water and carbon dioxide. It has the largest volcano in the Solar System, and some very large impact craters. Mars is named after the mythological Roman god of war because it is a red planet, the colour of blood. Mars has two small moons, called Phobos and Deimos. The planet Mars is made of rock. The ground there is red because of iron oxide (rust) in the rocks and dust. The planet's atmosphere is very thin and contains a lot of carbon dioxide and a very tiny amount of oxygen. The temperatures on Mars are colder than on Earth, because it is farther away from the Sun and has less air to keep warmth in. There is water ice and frozen carbon dioxide at the north and south poles. Mars does not have any liquid water on the surface. Mars has a very thin atmosphere with barely any oxygen (it is mostly carbon dioxide). It is believed there was once life on Mars, as traces of ice has been found on its surface, apart from the poles.Earth Our blue planetThe Earth is the third planet from the Sun and it is the only planet known to have life on it. The Earth formed around 4.5 billion years ago. About 71% of the surface of the Earth is covered by oceans. Because of this, it is sometimes called the "Blue Planet". The Earth is generally 150,000,000 kilometres or 93,000,000 miles away from the Sun (this distance is named an "Astronomical Unit"). The Earth moves along its way at an average speed of about 30 km or 19 mi a second. The Earth turns all the way around about 365 times in the time it takes for the Earth to go all the way around the Sun. The Earth is rocky. It is the largest of the rocky planets moving around the Sun by mass and by size. The Earth's shape is a sphere that is a little squashed on the top and bottom. All around the Earth is a large amount of air (the "atmosphere"). The mass of the Earth pulls the gasses in the air down and does not let them go into outer space. The air is mostly made of nitrogen (about 78%) and oxygen (about 21%) but there are a few other gasses as well.THANK YOU